[PATCH 3/5] arm64: dts: exynos: add initial CMU clock nodes in Exynos Auto v920

Sunyeal Hong
2024-07-05T02:12:15Z

Add cmu_top, cmu_peric0 clock nodes and
switch USI clocks instead of dummy fixed-rate-clock.

Signed-off-by: Sunyeal Hong <sunyeal.hong@samsung.com>
---
.../arm64/boot/dts/exynos/exynosautov920.dtsi | 40 +++++++++++++------
1 file changed, 27 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
index c1c8566d74f5..1659c0a375c9 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
@@ -6,6 +6,7 @@
*
*/

+#include <dt-bindings/clock/samsung,exynosautov920.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/soc/samsung,exynos-usi.h>

@@ -38,17 +39,6 @@ xtcxo: clock {
clock-output-names = "oscclk";
};

- /*
- * FIXME: Keep the stub clock for serial driver, until proper clock
- * driver is implemented.
- */
- clock_usi: clock-usi {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <200000000>;
- clock-output-names = "usi";
- };
-
cpus: cpus {
#address-cells = <2>;
#size-cells = <0>;
@@ -182,6 +172,28 @@ chipid@10000000 {
reg = <0x10000000 0x24>;
};

+ cmu_peric0: clock-controller@10800000 {
+ compatible = "samsung,exynosautov920-cmu-peric0";
+ reg = <0x10800000 0x8000>;
+ #clock-cells = <1>;
+
+ clocks = <&xtcxo>,
+ <&cmu_top DOUT_CLKCMU_PERIC0_NOC>,
+ <&cmu_top DOUT_CLKCMU_PERIC0_IP>;
+ clock-names = "oscclk",
+ "dout_clkcmu_peric0_noc",
+ "dout_clkcmu_peric0_ip";
+ };
+
+ cmu_top: clock-controller@11000000 {
+ compatible = "samsung,exynosautov920-cmu-top";
+ reg = <0x11000000 0x8000>;
+ #clock-cells = <1>;
+
+ clocks = <&xtcxo>;
+ clock-names = "oscclk";
+ };
+
gic: interrupt-controller@10400000 {
compatible = "arm,gic-v3";
#interrupt-cells = <3>;
@@ -213,7 +225,8 @@ usi_0: usi@108800c0 {
#address-cells = <1>;
#size-cells = <1>;
ranges;
- clocks = <&clock_usi>, <&clock_usi>;
+ clocks = <&cmu_peric0 CLK_DOUT_PERIC0_USI00_USI>,
+ <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>;
clock-names = "pclk", "ipclk";
status = "disabled";

@@ -224,7 +237,8 @@ serial_0: serial@10880000 {
interrupts = <GIC_SPI 764 IRQ_TYPE_LEVEL_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&uart0_bus>;
- clocks = <&clock_usi>, <&clock_usi>;
+ clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+ <&cmu_peric0 CLK_DOUT_PERIC0_USI00_USI>;
clock-names = "uart", "clk_uart_baud0";
samsung,uart-fifosize = <256>;
status = "disabled";
--
2.43.2