linux-kernel - [PATCH 2/5] drm/panel: samsung-atna33xc20: Add compatible for ATNA45AF01

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Message-Id: <20240710-x1e80100-crd-backlight-v1-2-eb242311a23e@linaro.org>
Date: Wed, 10 Jul 2024 19:04:58 +0200
From: Stephan Gerhold <stephan.gerhold@...aro.org>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: Jessica Zhang <quic_jesszhan@...cinc.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Douglas Anderson <dianders@...omium.org>, dri-devel@...ts.freedesktop.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>, 
 Johan Hovold <johan@...nel.org>
Subject: [PATCH 2/5] drm/panel: samsung-atna33xc20: Add compatible for
 ATNA45AF01

The Samsung ATNA45AF01 panel needs exactly the same non-standard power
sequence as the Samsung ATNA33XC20 panel for backlight to work properly.
Add the new "samsung,atna45af01" compatible to the driver to make it handle
these panels as well.

While ATNA45AF01 would also work with "samsung,atna33xc20" as a fallback
compatible, the original submission of the compatible in commit
4bfe6c8f7c23 ("drm/panel-simple: Add Samsung ATNA33XC20") had the timings
and resolution hardcoded. These would not work for ATNA45AF01.

Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>
---
 drivers/gpu/drm/panel/panel-samsung-atna33xc20.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c
index 9a482a744b8c..fd56fd02df87 100644
--- a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c
+++ b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c
@@ -333,6 +333,7 @@ static void atana33xc20_remove(struct dp_aux_ep_device *aux_ep)
 
 static const struct of_device_id atana33xc20_dt_match[] = {
 	{ .compatible = "samsung,atna33xc20", },
+	{ .compatible = "samsung,atna45af01", },
 	{ /* sentinal */ }
 };
 MODULE_DEVICE_TABLE(of, atana33xc20_dt_match);

-- 
2.44.1