From: Ondrej Jirman <megous@megous.com>
To: linux-sunxi@googlegroups.com,
Thierry Reding <thierry.reding@gmail.com>,
Sam Ravnborg <sam@ravnborg.org>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>, Rob Herring <robh+dt@kernel.org>,
Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Linus Walleij <linus.walleij@linaro.org>,
Icenowy Zheng <icenowy@aosc.io>
Cc: Ondrej Jirman <megous@megous.com>,
devicetree@vger.kernel.org, Samuel Holland <samuel@sholland.org>,
Bhushan Shah <bshah@kde.org>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Luca Weiss <luca@z3ntu.xyz>, Martijn Braam <martijn@brixit.nl>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 4/5] arm64: dts: sun50i-a64-pinephone: Enable LCD support on PinePhone
Date: Wed, 13 May 2020 23:24:50 +0200 [thread overview]
Message-ID: <20200513212451.1919013-5-megous@megous.com> (raw)
In-Reply-To: <20200513212451.1919013-1-megous@megous.com>
From: Icenowy Zheng <icenowy@aosc.io>
PinePhone uses PWM backlight and a XBD599 LCD panel over DSI for
display.
Backlight levels curve was optimized by Martijn Braam using a
lux meter.
Add its device nodes.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Martijn Braam <martijn@brixit.nl>
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../allwinner/sun50i-a64-pinephone-1.1.dts | 19 ++++++++++
.../dts/allwinner/sun50i-a64-pinephone.dtsi | 35 +++++++++++++++++++
2 files changed, 54 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
index 06a775c41664..3e99a87e9ce5 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
@@ -9,3 +9,22 @@ / {
model = "Pine64 PinePhone Braveheart (1.1)";
compatible = "pine64,pinephone-1.1", "allwinner,sun50i-a64";
};
+
+&backlight {
+ power-supply = <®_ldo_io0>;
+ /*
+ * PWM backlight circuit on this PinePhone revision was changed since
+ * 1.0, and the lowest PWM duty cycle that doesn't lead to backlight
+ * being off is around 20%. Duty cycle for the lowest brightness level
+ * also varries quite a bit between individual boards, so the lowest
+ * value here was chosen as a safe default.
+ */
+ brightness-levels = <
+ 774 793 814 842
+ 882 935 1003 1088
+ 1192 1316 1462 1633
+ 1830 2054 2309 2596
+ 2916 3271 3664 4096>;
+ num-interpolated-steps = <50>;
+ default-brightness-level = <400>;
+};
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index cefda145c3c9..e60b57f8ac14 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -16,6 +16,13 @@ aliases {
serial0 = &uart0;
};
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&r_pwm 0 50000 PWM_POLARITY_INVERTED>;
+ enable-gpios = <&pio 7 10 GPIO_ACTIVE_HIGH>; /* PH10 */
+ /* Backlight configuration differs per PinePhone revision. */
+ };
+
chosen {
stdout-path = "serial0:115200n8";
};
@@ -84,6 +91,30 @@ &dai {
status = "okay";
};
+&de {
+ status = "okay";
+};
+
+&dphy {
+ status = "okay";
+};
+
+&dsi {
+ vcc-dsi-supply = <®_dldo1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ panel@0 {
+ compatible = "xingbangda,xbd599", "sitronix,st7703";
+ reg = <0>;
+ reset-gpios = <&pio 3 23 GPIO_ACTIVE_LOW>; /* PD23 */
+ iovcc-supply = <®_dldo2>;
+ vcc-supply = <®_ldo_io0>;
+ backlight = <&backlight>;
+ };
+};
+
&ehci0 {
status = "okay";
};
@@ -188,6 +219,10 @@ &r_pio {
*/
};
+&r_pwm {
+ status = "okay";
+};
+
&r_rsb {
status = "okay";
--
2.26.2
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next prev parent reply other threads:[~2020-05-13 21:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 21:24 [PATCH v3 0/5] Add support for PinePhone LCD panel Ondrej Jirman
2020-05-13 21:24 ` [PATCH v3 1/5] dt-bindings: vendor-prefixes: Add Xingbangda Ondrej Jirman
2020-05-28 2:40 ` Rob Herring
2020-05-13 21:24 ` [PATCH v3 2/5] dt-bindings: panel: Add binding for Xingbangda XBD599 panel Ondrej Jirman
2020-05-26 11:22 ` Linus Walleij
2020-05-28 2:41 ` Rob Herring
2020-05-13 21:24 ` [PATCH v3 3/5] drm: panel: Add Xingbangda XBD599 panel (ST7703 controller) Ondrej Jirman
2020-05-26 11:32 ` Linus Walleij
2020-06-17 2:00 ` [linux-sunxi] " Ondřej Jirman
2020-05-28 3:31 ` Samuel Holland
2020-05-13 21:24 ` Ondrej Jirman [this message]
2020-05-29 16:27 ` [PATCH v3 4/5] arm64: dts: sun50i-a64-pinephone: Enable LCD support on PinePhone Pavel Machek
2020-05-13 21:24 ` [PATCH v3 5/5] arm64: dts: sun50i-a64-pinephone: Add touchscreen support Ondrej Jirman
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