arm64: dts: exynos: gs101: update USI UART to use peric0 clocks

Get rid of the dummy clock and start using the cmu_peric0 clocks
for the usi_uart and serial_0 nodes.

Tested the serial at 115200, 1000000 and 3000000 baudrates,
everthing went fine.

Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20240119111132.1290455-7-tudor.ambarus@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 3b1b6aa1b299bb70d18c043f8ad0186581939cab..dd2d6eededaa8c0864a564ef3d029503cfc44186 100644 (file)
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -180,14 +180,6 @@
                };
        };
 
-       /* TODO replace with CCF clock */
-       dummy_clk: clock-3 {
-               compatible = "fixed-clock";
-               #clock-cells = <0>;
-               clock-frequency = <12345>;
-               clock-output-names = "pclk";
-       };
-
        /* ect node is required to be present by bootloader */
        ect {
        };
@@ -387,7 +379,8 @@
                        ranges;
                        #address-cells = <1>;
                        #size-cells = <1>;
-                       clocks = <&dummy_clk>, <&dummy_clk>;
+                       clocks = <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI0_UART_CLK>,
+                                <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
                        clock-names = "pclk", "ipclk";
                        samsung,sysreg = <&sysreg_peric0 0x1020>;
                        samsung,mode = <USI_V2_UART>;
@@ -398,7 +391,8 @@
                                reg = <0x10a00000 0xc0>;
                                interrupts = <GIC_SPI 634
                                              IRQ_TYPE_LEVEL_HIGH 0>;
-                               clocks = <&dummy_clk 0>, <&dummy_clk 0>;
+                               clocks = <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI0_UART_CLK>,
+                                        <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
                                clock-names = "uart", "clk_uart_baud0";
                                samsung,uart-fifosize = <256>;
                                status = "disabled";