# RE: \[PATCH 01/10\] ARM: dts: exynos: add missing HDMI supplies on SMDK5250

- From: Alim Akhtar \<alim.akhtar@samsung.com\>
- Date: 2022-02-10 03:03:38 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2022/02/1665366
- Thread: https://ratatoskr.run/dri-devel/2022/02/1663111/t.md

```text


>-----Original Message-----
>From: Krzysztof Kozlowski [mailto:<redacted>]
>Sent: Tuesday, February 8, 2022 10:48 PM
>To: Inki Dae <inki.dae@samsung.com>; Joonyoung Shim
>[ref]; Seung-Woo Kim
>[ref]; Kyungmin Park
>[ref]; David Airlie [ref]; Daniel
>Vetter [ref]; Rob Herring [ref]; Krzysztof
>Kozlowski [ref]; Alim Akhtar
>[ref]; Kishon Vijay Abraham I [ref];
>Vinod Koul [ref]; dri-devel@lists.freedesktop.org;
>devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
>samsung-soc@vger.kernel.org; linux-kernel@vger.kernel.org; linux-
>phy@lists.infradead.org
>Cc: Marek Szyprowski <m.szyprowski@samsung.com>; Sylwester Nawrocki
>[ref]; stable@vger.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: <redacted> # v3.15+
>Signed-off-by: Krzysztof Kozlowski <redacted>
>---
> 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@samsung.com>

>
> &i2c_0 {
>--
>2.32.0



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