public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-18 22:14:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

ARM: dts: r8a7742-iwg21m: Add SPI NOR support

Browse source 
Add support for the SPI NOR device used to boot up the system
to the System on Module DT.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Link: https://lore.kernel.org/r/20200825085435.8744-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Lad Prabhakar 2020-08-25 09:54:35 +01:00 • committed by Geert Uytterhoeven
parent 7da4d2a8c6
commit fc7f54fb13
1 changed files with 51 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

51
arch/arm/boot/dts/r8a7742-iwg21m.dtsi
View file

@ -35,6 +35,16 @@
clock-frequency = <20000000>;
};
&gpio0 {
/* GP0_18 set low to select QSPI. Doing so will disable VIN2 */
qspi_en {
gpio-hog;
gpios = <18 GPIO_ACTIVE_HIGH>;
output-low;
line-name = "QSPI_EN";
};
};
&i2c0 {
pinctrl-0 = <&i2c0_pins>;
pinctrl-names = "default";
@ -70,4 +80,45 @@
groups = "mmc1_data4", "mmc1_ctrl";
function = "mmc1";
};
qspi_pins: qspi {
groups = "qspi_ctrl", "qspi_data2";
function = "qspi";
};
};
&qspi {
pinctrl-0 = <&qspi_pins>;
pinctrl-names = "default";
status = "okay";
flash: flash@0 {
compatible = "sst,sst25vf016b", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <50000000>;
m25p,fast-read;
spi-cpol;
spi-cpha;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "bootloader";
reg = <0x00000000 0x000c0000>;
read-only;
};
partition@c0000 {
label = "env";
reg = <0x000c0000 0x00002000>;
};
partition@c2000 {
label = "user";
reg = <0x000c2000 0x0013e000>;
};
};
};
};