linux-kernel - [PATCH] arm64: dts: meson: odroid-n2 plus: fix vddcpu

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Message-Id: <20201023094139.809379-1-jbrunet@baylibre.com>
Date:   Fri, 23 Oct 2020 11:41:39 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Kevin Hilman <khilman@...libre.com>
Cc:     Jerome Brunet <jbrunet@...libre.com>,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: meson: odroid-n2 plus: fix vddcpu_a pwm

On the odroid N2 plus, cpufreq is not available due to an error on the cpu
regulators. vddcpu a and b get the same PWM. The one provided to vddcpu A
is incorrect. Because vddcpu B PWM is busy the regulator cannot register:

> pwm-regulator regulator-vddcpu-b: Failed to get PWM: -16

Like on the odroid n2, use PWM A out of GPIOE_2 for vddcpu A to fix the
problem

Fixes: 98d24896ee11 ("arm64: dts: meson: add support for the ODROID-N2+")
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
index 5de2815ba99d..ce1198ad34e4 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
@@ -19,7 +19,7 @@ &vddcpu_a {
 	regulator-min-microvolt = <680000>;
 	regulator-max-microvolt = <1040000>;
 
-	pwms = <&pwm_AO_cd 1 1500 0>;
+	pwms = <&pwm_ab 0 1500 0>;
 };
 
 &vddcpu_b {
-- 
2.25.4