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From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@linaro.org>
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Subject: [PATCH v2 4/6] arm64: dts: exynos: gs101: use correct clocks for usi_uart
Date: Tue, 30 Jan 2024 09:36:43 +0000
Message-ID: <20240130093812.1746512-5-andre.draszik@linaro.org>
In-Reply-To: <20240130093812.1746512-1-andre.draszik@linaro.org>
References: <20240130093812.1746512-1-andre.draszik@linaro.org>
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Wrong pclk clocks have been used in this usi_uart instance here. For
USI and UART, we need the ipclk and pclk, where pclk is the bus clock.
Without it, nothing can work.

It is unclear what exactly is using USI0_UART_CLK, but it is not
required for the IP to be operational at this stage, while pclk is.
This also brings the DT in line with the clock names expected by the
usi and uart drivers.

Update the DTSI accordingly.

Fixes: d97b6c902a40 ("arm64: dts: exynos: gs101: update USI UART to use peric0 clocks")
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Tested-by: Tudor Ambarus <tudor.ambarus@linaro.org>

---
v2:
* fix a typo in and add an empty line to the commit message
* collect Reviewed-by: Tested-by: tags
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index e5b665be2d62..f93e937d2726 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -410,7 +410,7 @@ usi_uart: usi@10a000c0 {
 			ranges;
 			#address-cells = <1>;
 			#size-cells = <1>;
-			clocks = <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI0_UART_CLK>,
+			clocks = <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_PCLK_0>,
 				 <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
 			clock-names = "pclk", "ipclk";
 			samsung,sysreg = <&sysreg_peric0 0x1020>;
@@ -422,7 +422,7 @@ serial_0: serial@10a00000 {
 				reg = <0x10a00000 0xc0>;
 				interrupts = <GIC_SPI 634
 					      IRQ_TYPE_LEVEL_HIGH 0>;
-				clocks = <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI0_UART_CLK>,
+				clocks = <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_PCLK_0>,
 					 <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
 				clock-names = "uart", "clk_uart_baud0";
 				samsung,uart-fifosize = <256>;
-- 
2.43.0.429.g432eaa2c6b-goog