From 2bf4658b8c5e5f4f43dc1888fe39ea61e6eeba64 Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Tue, 13 Apr 2021 17:54:17 +0200 Subject: [PATCH] board: sl28: fix RGMII clock and voltage It was noticed that the clock isn't continuously enabled when there is no link. This is because the 125MHz clock is derived from the internal PLL which seems to go into some kind of power-down mode every once in a while. The LS1028A expects a contiuous clock. Thus enable the PLL all the time. Also, the RGMII pad voltage is wrong, it was configured to 2.5V (that is the VDDH regulator). The correct voltage is 1.8V, i.e. the VDDIO regulator. Signed-off-by: Michael Walle Reviewed-by: Priyanka Jain --- arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts | 3 ++- arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts index fe708bd..33d85ed 100644 --- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts +++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts @@ -41,8 +41,9 @@ qca,clk-out-frequency = <125000000>; qca,clk-out-strength = ; + qca,keep-pll-enabled; - vddio-supply = <&vddh>; + vddio-supply = <&vddio>; vddio: vddio-regulator { regulator-name = "VDDIO"; diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts index 33b1630..b95e082 100644 --- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts +++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts @@ -32,8 +32,9 @@ qca,clk-out-frequency = <125000000>; qca,clk-out-strength = ; + qca,keep-pll-enabled; - vddio-supply = <&vddh>; + vddio-supply = <&vddio>; vddio: vddio-regulator { regulator-name = "VDDIO"; -- 2.7.4