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riscv: dts: spacemit: Acquire clocks for UART

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The K1 SoC features two clocks for UART controller, Acquire them
explicitly in the driver. Also it is required to remove the
clock-frequency properties from the uart node, otherwise the new
clock properties are ignored by of_platform_serial_setup() in "8250_of.c".

Reviewed-by: Alex Elder <elder@riscstar.com>
Reviewed-by: Haylen Chu <heylenay@4d2.org>
Link: https://lore.kernel.org/r/20250424-05-dts-clock-v2-2-17d83a705c4c@gentoo.org
Signed-off-by: Yixun Lan <dlan@gentoo.org>
This commit is contained in:
Yixun Lan 2025-04-24 15:48:09 +08:00
parent c4f3c45a47
commit 3b2802c2d6
No known key found for this signature in database
GPG key ID: 31AAEA47594DBBED
1 changed files with 27 additions and 9 deletions
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36
arch/riscv/boot/dts/spacemit/k1.dtsi
View file

@ -360,8 +360,10 @@
uart0: serial@d4017000 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017000 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART0>,
<&syscon_apbc CLK_UART0_BUS>;
clock-names = "core", "bus";
interrupts = <42>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -370,8 +372,10 @@
uart2: serial@d4017100 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017100 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART2>,
<&syscon_apbc CLK_UART2_BUS>;
clock-names = "core", "bus";
interrupts = <44>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -380,8 +384,10 @@
uart3: serial@d4017200 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017200 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART3>,
<&syscon_apbc CLK_UART3_BUS>;
clock-names = "core", "bus";
interrupts = <45>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -390,8 +396,10 @@
uart4: serial@d4017300 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017300 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART4>,
<&syscon_apbc CLK_UART4_BUS>;
clock-names = "core", "bus";
interrupts = <46>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -400,8 +408,10 @@
uart5: serial@d4017400 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017400 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART5>,
<&syscon_apbc CLK_UART5_BUS>;
clock-names = "core", "bus";
interrupts = <47>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -410,8 +420,10 @@
uart6: serial@d4017500 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017500 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART6>,
<&syscon_apbc CLK_UART6_BUS>;
clock-names = "core", "bus";
interrupts = <48>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -420,8 +432,10 @@
uart7: serial@d4017600 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017600 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART7>,
<&syscon_apbc CLK_UART7_BUS>;
clock-names = "core", "bus";
interrupts = <49>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -430,8 +444,10 @@
uart8: serial@d4017700 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017700 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART8>,
<&syscon_apbc CLK_UART8_BUS>;
clock-names = "core", "bus";
interrupts = <50>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";
@ -440,8 +456,10 @@
uart9: serial@d4017800 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xd4017800 0x0 0x100>;
clocks = <&syscon_apbc CLK_UART9>,
<&syscon_apbc CLK_UART9_BUS>;
clock-names = "core", "bus";
interrupts = <51>;
clock-frequency = <14857000>;
reg-shift = <2>;
reg-io-width = <4>;
status = "disabled";