linux-kernel - RE: [PATCH 01/10] ARM: dts: exynos: add missing HDMI supplies on SMDK5250

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Message-ID: <000001d81e2a$c37c90d0$4a75b270$@samsung.com>
Date:   Thu, 10 Feb 2022 08:33:18 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Krzysztof Kozlowski'" <krzysztof.kozlowski@...onical.com>,
        "'Inki Dae'" <inki.dae@...sung.com>,
        "'Joonyoung Shim'" <jy0922.shim@...sung.com>,
        "'Seung-Woo Kim'" <sw0312.kim@...sung.com>,
        "'Kyungmin Park'" <kyungmin.park@...sung.com>,
        "'David Airlie'" <airlied@...ux.ie>,
        "'Daniel Vetter'" <daniel@...ll.ch>,
        "'Rob Herring'" <robh+dt@...nel.org>,
        "'Kishon Vijay Abraham I'" <kishon@...com>,
        "'Vinod Koul'" <vkoul@...nel.org>,
        <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-phy@...ts.infradead.org>
Cc:     "'Marek Szyprowski'" <m.szyprowski@...sung.com>,
        "'Sylwester Nawrocki'" <snawrocki@...nel.org>,
        <stable@...r.kernel.org>
Subject: RE: [PATCH 01/10] ARM: dts: exynos: add missing HDMI supplies on
 SMDK5250



>-----Original Message-----
>From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@...onical.com]
>Sent: Tuesday, February 8, 2022 10:48 PM
>To: Inki Dae <inki.dae@...sung.com>; Joonyoung Shim
><jy0922.shim@...sung.com>; Seung-Woo Kim
><sw0312.kim@...sung.com>; Kyungmin Park
><kyungmin.park@...sung.com>; David Airlie <airlied@...ux.ie>; Daniel
>Vetter <daniel@...ll.ch>; Rob Herring <robh+dt@...nel.org>; Krzysztof
>Kozlowski <krzysztof.kozlowski@...onical.com>; Alim Akhtar
><alim.akhtar@...sung.com>; Kishon Vijay Abraham I <kishon@...com>;
>Vinod Koul <vkoul@...nel.org>; dri-devel@...ts.freedesktop.org;
>devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
>samsung-soc@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
>phy@...ts.infradead.org
>Cc: Marek Szyprowski <m.szyprowski@...sung.com>; Sylwester Nawrocki
><snawrocki@...nel.org>; stable@...r.kernel.org
>Subject: [PATCH 01/10] ARM: dts: exynos: add missing HDMI supplies on
>SMDK5250
>
>Add required VDD supplies to HDMI block on SMDK5250.  Without them, the
>HDMI driver won't probe.  Because of lack of schematics, use same supplies
as
>on Arndale 5250 board (voltage matches).
>
>Cc: <stable@...r.kernel.org> # v3.15+
>Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>---
> arch/arm/boot/dts/exynos5250-smdk5250.dts | 3 +++
> 1 file changed, 3 insertions(+)
>
>diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts
>b/arch/arm/boot/dts/exynos5250-smdk5250.dts
>index 65d2474f83eb..21fbbf3d8684 100644
>--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
>+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
>@@ -118,6 +118,9 @@ &hdmi {
> 	status = "okay";
> 	ddc = <&i2c_2>;
> 	hpd-gpios = <&gpx3 7 GPIO_ACTIVE_HIGH>;
>+	vdd-supply = <&ldo8_reg>;
>+	vdd_osc-supply = <&ldo10_reg>;
>+	vdd_pll-supply = <&ldo8_reg>;
> };

Cross checked with SMDK schematic, looks correct.

Reviewed-by: Alim Akhtar <alim.akhtar@...sung.com>

>
> &i2c_0 {
>--
>2.32.0