[PATCH v5 13/22] ARM: dts: exynos: Enable UART3 on Exynos5410
From: khilman@kernel.org (Kevin Hilman)
Date: 2016-06-01 19:57:57
Also in:
linux-clk, linux-devicetree, linux-samsung-soc, lkml
Hi Krzysztof, On Sat, May 28, 2016 at 2:54 AM, Krzysztof Kozlowski [off-list ref] wrote:
Just like other Exynos5 family SoCs, this one has four UARTs. Configure clocks for UART3 and enable it. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Javier Martinez Canillas <redacted>
This patch landed in linux-next[1] and kernelci.org found a boot regression on the exynos5410-odroidxu[2], where it looks like it's faulting in clk_prepare(). Bisecting pointed to this patch. I added "status = disabled" back into the DTS on top of next-20160601[3] and verified my odroid-XU to be booting fine again. Kevin [1] 594127ada6df ARM: dts: exynos: Enable UART3 on Exynos5410 [2] https://kernelci.org/boot/exynos5410-odroidxu/job/next/kernel/next-20160601/defconfig/multi_v7_defconfig/lab/lab-baylibre-seattle/?_id=574e97c759b5140f4141c8ef [3] diff --git a/arch/arm/boot/dts/exynos5410.dtsi b/arch/arm/boot/dts/exynos5410.dtsi index a937d9bdad90..f4baf1d1e864 100644
--- a/arch/arm/boot/dts/exynos5410.dtsi
+++ b/arch/arm/boot/dts/exynos5410.dtsi@@ -238,6 +238,7 @@ }; &serial_3 { + status = "disabled"; clocks = <&clock CLK_UART3>, <&clock CLK_SCLK_UART3>; clock-names = "uart", "clk_uart_baud0"; };