public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
linux/arch/mips/boot/dts/mti/sead3.dts

259 lines
4.8 KiB
Text
Raw Normal View History

MIPS: SEAD3: Implement OF support. Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-17 11:37:03 -06:00
/dts-v1/;
/memreserve/ 0x00000000 0x00001000; // reserved
/memreserve/ 0x00001000 0x000ef000; // ROM data
/memreserve/ 0x000f0000 0x004cc000; // reserved
MIPS: SEAD3: Probe interrupt controllers using DT Probe the CPU interrupt controller & optional Global Interrupt Controller (GIC) using devicetree rather than platform code. Because the bootloader on SEAD3 does not provide a device tree to the kernel & the device tree is always built in, we patch out the GIC node during boot if we detect that a GIC is not present in the system. The appropriate IRQ domain is discovered by platform code setting up device IRQ numbers temporarily. It will be removed by further patches which move the devices towards being probed via device tree. No behavioural change is intended by this patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14047/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:34 +01:00
#include <dt-bindings/interrupt-controller/mips-gic.h>
MIPS: SEAD3: Implement OF support. Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-17 11:37:03 -06:00
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "mti,sead-3";
MIPS: generic: Convert SEAD-3 to a generic board Convert the MIPS SEAD-3 board support to be a generic board, supported by generic kernels. Because the SEAD-3 boot protocol was defined long ago and we don't want to force a switch to the UHI protocol, SEAD-3 is added as a legacy board which is detected by reading the REVISION register. This may technically not be a valid memory read & future work will include attempting to handle that gracefully. In practice since SEAD-3 is the only legacy board supported by the generic kernel so far the read will only happen on SEAD-3 boards, and even once Malta is converted the same REVISION register exists there too. Other boards such as Boston, Ci20 & Ci40 will use the UHI boot protocol & thus not run any of the legacy board detect functions. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14354/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 18:18:21 +01:00
model = "MIPS SEAD-3";
MIPS: SEAD3: Implement OF support. Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-17 11:37:03 -06:00
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
chosen {
MIPS: generic/yamon-dt: Use serial* rather than uart* aliases Name aliases in the SEAD-3 device tree serial0 & serial1, rather than uart0 & uart1. This allows the core serial code to make use of the aliases to ensure that the UARTs are consistently numbered as expected rather than having the numbering depend upon probe order. When translating YAMON-provided serial configuration to a device tree stdout-path property adjust accordingly, such that we continue to reference a valid alias. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16183/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:53 -07:00
stdout-path = "serial1:115200";
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
};
aliases {
MIPS: generic/yamon-dt: Use serial* rather than uart* aliases Name aliases in the SEAD-3 device tree serial0 & serial1, rather than uart0 & uart1. This allows the core serial code to make use of the aliases to ensure that the UARTs are consistently numbered as expected rather than having the numbering depend upon probe order. When translating YAMON-provided serial configuration to a device tree stdout-path property adjust accordingly, such that we continue to reference a valid alias. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16183/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:53 -07:00
serial0 = &uart0;
serial1 = &uart1;
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
};
MIPS: SEAD3: Implement OF support. Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-17 11:37:03 -06:00
cpus {
cpu@0 {
compatible = "mti,mips14KEc", "mti,mips14Kc";
};
};
memory {
device_type = "memory";
reg = <0x0 0x08000000>;
};
MIPS: SEAD3: Probe interrupt controllers using DT Probe the CPU interrupt controller & optional Global Interrupt Controller (GIC) using devicetree rather than platform code. Because the bootloader on SEAD3 does not provide a device tree to the kernel & the device tree is always built in, we patch out the GIC node during boot if we detect that a GIC is not present in the system. The appropriate IRQ domain is discovered by platform code setting up device IRQ numbers temporarily. It will be removed by further patches which move the devices towards being probed via device tree. No behavioural change is intended by this patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14047/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:34 +01:00
cpu_intc: interrupt-controller {
compatible = "mti,cpu-interrupt-controller";
interrupt-controller;
#interrupt-cells = <1>;
};
gic: interrupt-controller@1b1c0000 {
compatible = "mti,gic";
reg = <0x1b1c0000 0x20000>;
interrupt-controller;
#interrupt-cells = <3>;
/*
* Declare the interrupt-parent even though the mti,gic
* binding doesn't require it, such that the kernel can
* figure out that cpu_intc is the root interrupt
* controller & should be probed first.
*/
interrupt-parent = <&cpu_intc>;
};
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
MIPS: SEAD3: Probe EHCI controller using DT Probe the SEAD3 EHCI controller using the generic-ehci driver & device tree rather than platform code, in order to reduce the amount of the latter. Now that no devices probed from platform code require interrupts, remove the retrieval of the IRQ domain & sead3int.h. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14051/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:38 +01:00
ehci@1b200000 {
compatible = "generic-ehci";
reg = <0x1b200000 0x1000>;
MIPS: SEAD-3: Set interrupt-parent per-device, not at root node The SEAD-3 board may be configured with or without a MIPS Global Interrupt Controller (GIC). Because of this we have a device tree with a default case of a GIC present, and code to fixup the device tree based upon a configuration register that indicates the presence of the GIC. In order to keep this DT fixup code simple, the interrupt-parent property was specified at the root node of the SEAD-3 DT, allowing the fixup code to simply change this property to the phandle of the CPU interrupt controller if a GIC is not present & affect all interrupt-using devices at once. This however causes a problem if we do have a GIC & the device tree is used as-is, because the interrupt-parent property of the root node applies to the CPU interrupt controller node. This causes a cycle when of_irq_init() attempts to probe interrupt controllers in order and boots fail due to a lack of configured interrupts, with this message printed on the kernel console: [ 0.000000] OF: of_irq_init: children remain, but no parents Fix this by removing the interrupt-parent property from the DT root node & instead setting it for each device which uses interrupts, ensuring that the CPU interrupt controller node has no interrupt-parent & allowing of_irq_init() to identify it as the root interrupt controller. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reported-by: Keng Koh <keng.koh@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16187/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:57 -07:00
interrupt-parent = <&gic>;
MIPS: SEAD-3: Fix GIC interrupt specifiers The various interrupt specifiers in the device tree are not in a valid format for the MIPS GIC interrupt controller binding. Where each interrupt should provide 3 values - GIC_LOCAL or GIC_SHARED, the pin number & the type of interrupt - the device tree was only providing the pin number. This causes interrupts for those devices to not be used when a GIC is present. SEAD-3 systems without a GIC are unaffected since the DT fixup code generates interrupt specifiers that are valid for the CPU interrupt controller. Fix this by adding the GIC_SHARED & IRQ_TYPE_LEVEL_HIGH values to each interrupt specifier. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: c11e3b48dbc3 ("MIPS: SEAD3: Probe UARTs using DT") Fixes: a34e93882de4 ("MIPS: SEAD3: Probe ethernet controller using DT") Fixes: 7afd2a5aec2e ("MIPS: SEAD3: Probe EHCI controller using DT") Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org # v4.9+ Patchwork: https://patchwork.linux-mips.org/patch/16189/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:59 -07:00
interrupts = <GIC_SHARED 0 IRQ_TYPE_LEVEL_HIGH>; /* GIC 0 or CPU 6 */
MIPS: SEAD3: Probe EHCI controller using DT Probe the SEAD3 EHCI controller using the generic-ehci driver & device tree rather than platform code, in order to reduce the amount of the latter. Now that no devices probed from platform code require interrupts, remove the retrieval of the IRQ domain & sead3int.h. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14051/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:38 +01:00
has-transaction-translator;
};
MIPS: SEAD3: Probe parallel flash via DT Probe the system parallel flash using device tree rather than platform code, in order to reduce the amount of the latter. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14053/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:40 +01:00
flash@1c000000 {
compatible = "intel,28f128j3", "cfi-flash";
reg = <0x1c000000 0x2000000>;
#address-cells = <1>;
#size-cells = <1>;
bank-width = <4>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
user-fs@0 {
label = "User FS";
reg = <0x0 0x1fc0000>;
};
board-config@3e0000 {
label = "Board Config";
reg = <0x1fc0000 0x40000>;
};
};
};
MIPS: SEAD3: Reset via generic syscon-reboot driver & DT Remove the SEAD3 implementation of _machine_restart & instead make use of the generic syscon-reboot driver probed via device tree. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14056/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:43 +01:00
fpga_regs: system-controller@1f000000 {
compatible = "mti,sead3-fpga", "syscon", "simple-mfd";
reg = <0x1f000000 0x200>;
reboot {
compatible = "syscon-reboot";
regmap = <&fpga_regs>;
offset = <0x50>;
mask = <0x4d>;
};
MIPS: SEAD3: Use generic restart-poweroff driver Remove the custom platform code to restart when instructed to power off, instead relying upon the generic restart-poweroff driver probed via DT to do the same thing. Remove also the halt implementation, which is incorrect. The generic MIPS version will hang the system as halt should. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14057/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:44 +01:00
poweroff {
compatible = "restart-poweroff";
};
MIPS: SEAD3: Reset via generic syscon-reboot driver & DT Remove the SEAD3 implementation of _machine_restart & instead make use of the generic syscon-reboot driver probed via device tree. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14056/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:43 +01:00
};
MIPS: SEAD3: Use register-bit-led driver via DT for LEDs Probe a driver for the PLED & FLED LEDs found on the SEAD3 board using the register-bit-led driver via device tree, rather than a custom driver via platform code. Enable support for the register-bit-led driver & its prerequisite syscon in sead3_defconfig. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14054/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:41 +01:00
system-controller@1f000200 {
compatible = "mti,sead3-cpld", "syscon", "simple-mfd";
reg = <0x1f000200 0x300>;
led@10.0 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x1>;
label = "pled0";
};
led@10.1 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x2>;
label = "pled1";
};
led@10.2 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x4>;
label = "pled2";
};
led@10.3 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x8>;
label = "pled3";
};
led@10.4 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x10>;
label = "pled4";
};
led@10.5 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x20>;
label = "pled5";
};
led@10.6 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x40>;
label = "pled6";
};
led@10.7 {
compatible = "register-bit-led";
offset = <0x10>;
mask = <0x80>;
label = "pled7";
};
led@18.0 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x1>;
label = "fled0";
};
led@18.1 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x2>;
label = "fled1";
};
led@18.2 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x4>;
label = "fled2";
};
led@18.3 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x8>;
label = "fled3";
};
led@18.4 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x10>;
label = "fled4";
};
led@18.5 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x20>;
label = "fled5";
};
led@18.6 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x40>;
label = "fled6";
};
led@18.7 {
compatible = "register-bit-led";
offset = <0x18>;
mask = <0x80>;
label = "fled7";
};
MIPS: SEAD3: Use img-ascii-lcd driver Probe the img-ascii-lcd driver using device tree in order to display a message on the SEAD3 board's LCD display, and remove the platform code that was formerly performing this function. This removes more platform code and moves SEAD3 further towards being entirely DT-based. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14063/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:50 +01:00
lcd@200 {
compatible = "mti,sead3-lcd";
offset = <0x200>;
};
MIPS: SEAD3: Use register-bit-led driver via DT for LEDs Probe a driver for the PLED & FLED LEDs found on the SEAD3 board using the register-bit-led driver via device tree, rather than a custom driver via platform code. Enable support for the register-bit-led driver & its prerequisite syscon in sead3_defconfig. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14054/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:41 +01:00
};
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
/* UART connected to FTDI & miniUSB socket */
uart0: uart@1f000900 {
compatible = "ns16550a";
reg = <0x1f000900 0x20>;
reg-io-width = <4>;
reg-shift = <2>;
clock-frequency = <14745600>;
MIPS: SEAD-3: Set interrupt-parent per-device, not at root node The SEAD-3 board may be configured with or without a MIPS Global Interrupt Controller (GIC). Because of this we have a device tree with a default case of a GIC present, and code to fixup the device tree based upon a configuration register that indicates the presence of the GIC. In order to keep this DT fixup code simple, the interrupt-parent property was specified at the root node of the SEAD-3 DT, allowing the fixup code to simply change this property to the phandle of the CPU interrupt controller if a GIC is not present & affect all interrupt-using devices at once. This however causes a problem if we do have a GIC & the device tree is used as-is, because the interrupt-parent property of the root node applies to the CPU interrupt controller node. This causes a cycle when of_irq_init() attempts to probe interrupt controllers in order and boots fail due to a lack of configured interrupts, with this message printed on the kernel console: [ 0.000000] OF: of_irq_init: children remain, but no parents Fix this by removing the interrupt-parent property from the DT root node & instead setting it for each device which uses interrupts, ensuring that the CPU interrupt controller node has no interrupt-parent & allowing of_irq_init() to identify it as the root interrupt controller. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reported-by: Keng Koh <keng.koh@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16187/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:57 -07:00
interrupt-parent = <&gic>;
MIPS: SEAD-3: Fix GIC interrupt specifiers The various interrupt specifiers in the device tree are not in a valid format for the MIPS GIC interrupt controller binding. Where each interrupt should provide 3 values - GIC_LOCAL or GIC_SHARED, the pin number & the type of interrupt - the device tree was only providing the pin number. This causes interrupts for those devices to not be used when a GIC is present. SEAD-3 systems without a GIC are unaffected since the DT fixup code generates interrupt specifiers that are valid for the CPU interrupt controller. Fix this by adding the GIC_SHARED & IRQ_TYPE_LEVEL_HIGH values to each interrupt specifier. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: c11e3b48dbc3 ("MIPS: SEAD3: Probe UARTs using DT") Fixes: a34e93882de4 ("MIPS: SEAD3: Probe ethernet controller using DT") Fixes: 7afd2a5aec2e ("MIPS: SEAD3: Probe EHCI controller using DT") Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org # v4.9+ Patchwork: https://patchwork.linux-mips.org/patch/16189/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:59 -07:00
interrupts = <GIC_SHARED 3 IRQ_TYPE_LEVEL_HIGH>; /* GIC 3 or CPU 4 */
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
no-loopback-test;
};
/* UART connected to RS232 socket */
uart1: uart@1f000800 {
compatible = "ns16550a";
reg = <0x1f000800 0x20>;
reg-io-width = <4>;
reg-shift = <2>;
clock-frequency = <14745600>;
MIPS: SEAD-3: Set interrupt-parent per-device, not at root node The SEAD-3 board may be configured with or without a MIPS Global Interrupt Controller (GIC). Because of this we have a device tree with a default case of a GIC present, and code to fixup the device tree based upon a configuration register that indicates the presence of the GIC. In order to keep this DT fixup code simple, the interrupt-parent property was specified at the root node of the SEAD-3 DT, allowing the fixup code to simply change this property to the phandle of the CPU interrupt controller if a GIC is not present & affect all interrupt-using devices at once. This however causes a problem if we do have a GIC & the device tree is used as-is, because the interrupt-parent property of the root node applies to the CPU interrupt controller node. This causes a cycle when of_irq_init() attempts to probe interrupt controllers in order and boots fail due to a lack of configured interrupts, with this message printed on the kernel console: [ 0.000000] OF: of_irq_init: children remain, but no parents Fix this by removing the interrupt-parent property from the DT root node & instead setting it for each device which uses interrupts, ensuring that the CPU interrupt controller node has no interrupt-parent & allowing of_irq_init() to identify it as the root interrupt controller. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reported-by: Keng Koh <keng.koh@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16187/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:57 -07:00
interrupt-parent = <&gic>;
MIPS: SEAD-3: Fix GIC interrupt specifiers The various interrupt specifiers in the device tree are not in a valid format for the MIPS GIC interrupt controller binding. Where each interrupt should provide 3 values - GIC_LOCAL or GIC_SHARED, the pin number & the type of interrupt - the device tree was only providing the pin number. This causes interrupts for those devices to not be used when a GIC is present. SEAD-3 systems without a GIC are unaffected since the DT fixup code generates interrupt specifiers that are valid for the CPU interrupt controller. Fix this by adding the GIC_SHARED & IRQ_TYPE_LEVEL_HIGH values to each interrupt specifier. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: c11e3b48dbc3 ("MIPS: SEAD3: Probe UARTs using DT") Fixes: a34e93882de4 ("MIPS: SEAD3: Probe ethernet controller using DT") Fixes: 7afd2a5aec2e ("MIPS: SEAD3: Probe EHCI controller using DT") Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org # v4.9+ Patchwork: https://patchwork.linux-mips.org/patch/16189/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:59 -07:00
interrupts = <GIC_SHARED 2 IRQ_TYPE_LEVEL_HIGH>; /* GIC 2 or CPU 4 */
MIPS: SEAD3: Probe UARTs using DT Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:35 +01:00
no-loopback-test;
};
MIPS: SEAD3: Probe ethernet controller using DT Probe the smsc911x ethernet controller using device tree rather than platform code, reducing the amount of the latter. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14050/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:37 +01:00
eth@1f010000 {
compatible = "smsc,lan9115";
reg = <0x1f010000 0x10000>;
reg-io-width = <4>;
MIPS: SEAD-3: Set interrupt-parent per-device, not at root node The SEAD-3 board may be configured with or without a MIPS Global Interrupt Controller (GIC). Because of this we have a device tree with a default case of a GIC present, and code to fixup the device tree based upon a configuration register that indicates the presence of the GIC. In order to keep this DT fixup code simple, the interrupt-parent property was specified at the root node of the SEAD-3 DT, allowing the fixup code to simply change this property to the phandle of the CPU interrupt controller if a GIC is not present & affect all interrupt-using devices at once. This however causes a problem if we do have a GIC & the device tree is used as-is, because the interrupt-parent property of the root node applies to the CPU interrupt controller node. This causes a cycle when of_irq_init() attempts to probe interrupt controllers in order and boots fail due to a lack of configured interrupts, with this message printed on the kernel console: [ 0.000000] OF: of_irq_init: children remain, but no parents Fix this by removing the interrupt-parent property from the DT root node & instead setting it for each device which uses interrupts, ensuring that the CPU interrupt controller node has no interrupt-parent & allowing of_irq_init() to identify it as the root interrupt controller. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reported-by: Keng Koh <keng.koh@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16187/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:57 -07:00
interrupt-parent = <&gic>;
MIPS: SEAD-3: Fix GIC interrupt specifiers The various interrupt specifiers in the device tree are not in a valid format for the MIPS GIC interrupt controller binding. Where each interrupt should provide 3 values - GIC_LOCAL or GIC_SHARED, the pin number & the type of interrupt - the device tree was only providing the pin number. This causes interrupts for those devices to not be used when a GIC is present. SEAD-3 systems without a GIC are unaffected since the DT fixup code generates interrupt specifiers that are valid for the CPU interrupt controller. Fix this by adding the GIC_SHARED & IRQ_TYPE_LEVEL_HIGH values to each interrupt specifier. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: c11e3b48dbc3 ("MIPS: SEAD3: Probe UARTs using DT") Fixes: a34e93882de4 ("MIPS: SEAD3: Probe ethernet controller using DT") Fixes: 7afd2a5aec2e ("MIPS: SEAD3: Probe EHCI controller using DT") Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org # v4.9+ Patchwork: https://patchwork.linux-mips.org/patch/16189/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-02 12:29:59 -07:00
interrupts = <GIC_SHARED 0 IRQ_TYPE_LEVEL_HIGH>; /* GIC 0 or CPU 6 */
MIPS: SEAD3: Probe ethernet controller using DT Probe the smsc911x ethernet controller using device tree rather than platform code, reducing the amount of the latter. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14050/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-26 15:17:37 +01:00
phy-mode = "mii";
smsc,irq-push-pull;
smsc,save-mac-address;
};
MIPS: SEAD3: Implement OF support. Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-17 11:37:03 -06:00
};
Reference in a new issue Copy permalink