linux-kernel - [PATCH v8 6/8] MIPS: DTS: CI20: Add DT nodes for HDMI setup

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Message-Id: <d62023e0872e9b393db736f4a0ecf04b3fc1c91b.1637691240.git.hns@goldelico.com>
Date:   Tue, 23 Nov 2021 19:13:59 +0100
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Paul Cercueil <paul@...pouillou.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Kees Cook <keescook@...omium.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Harry Wentland <harry.wentland@....com>,
        Sam Ravnborg <sam@...nborg.org>,
        Maxime Ripard <maxime@...no.tech>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Paul Boddie <paul@...die.org.uk>
Cc:     devicetree@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, letux-kernel@...nphoenux.org,
        Jonas Karlman <jonas@...boo.se>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH v8 6/8] MIPS: DTS: CI20: Add DT nodes for HDMI setup

From: Paul Boddie <paul@...die.org.uk>

We need to hook up
* HDMI connector
* HDMI power regulator
* JZ4780_CLK_HDMI @ 27 MHz
* DDC pinmux
* HDMI and LCDC endpoint connections

Signed-off-by: Paul Boddie <paul@...die.org.uk>
Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 83 +++++++++++++++++++++++++++--
 1 file changed, 80 insertions(+), 3 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index b249a4f0f6b62..15cf03670693f 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -78,6 +78,18 @@ eth0_power: fixedregulator@0 {
 		enable-active-high;
 	};
 
+	hdmi_out: connector {
+		compatible = "hdmi-connector";
+		label = "HDMI OUT";
+		type = "a";
+
+		port {
+			hdmi_con: endpoint {
+				remote-endpoint = <&dw_hdmi_out>;
+			};
+		};
+	};
+
 	ir: ir {
 		compatible = "gpio-ir-receiver";
 		gpios = <&gpe 3 GPIO_ACTIVE_LOW>;
@@ -102,6 +114,17 @@ otg_power: fixedregulator@2 {
 		gpio = <&gpf 14 GPIO_ACTIVE_LOW>;
 		enable-active-high;
 	};
+
+	hdmi_power: fixedregulator@3 {
+		compatible = "regulator-fixed";
+
+		regulator-name = "hdmi_power";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+
+		gpio = <&gpa 25 0>;
+		enable-active-high;
+	};
 };
 
 &ext {
@@ -114,11 +137,13 @@ &cgu {
 	 * precision.
 	 */
 	assigned-clocks = <&cgu JZ4780_CLK_OTGPHY>, <&cgu JZ4780_CLK_RTC>,
-			  <&cgu JZ4780_CLK_SSIPLL>, <&cgu JZ4780_CLK_SSI>;
+			  <&cgu JZ4780_CLK_SSIPLL>, <&cgu JZ4780_CLK_SSI>,
+			  <&cgu JZ4780_CLK_HDMI>;
 	assigned-clock-parents = <0>, <&cgu JZ4780_CLK_RTCLK>,
 				 <&cgu JZ4780_CLK_MPLL>,
-				 <&cgu JZ4780_CLK_SSIPLL>;
-	assigned-clock-rates = <48000000>, <0>, <54000000>;
+				 <&cgu JZ4780_CLK_SSIPLL>,
+				 <0>;
+	assigned-clock-rates = <48000000>, <0>, <54000000>, <0>, <27000000>;
 };
 
 &tcu {
@@ -509,6 +534,19 @@ pins_i2c4: i2c4 {
 		bias-disable;
 	};
 
+	pins_hdmi_ddc: hdmi_ddc {
+		function = "hdmi-ddc";
+		groups = "hdmi-ddc";
+		bias-disable;
+	};
+
+	/* switch to PF25 as gpio driving DDC_SDA low */
+	pins_hdmi_ddc_unwedge: hdmi_ddc {
+		function = "hdmi-ddc";
+		groups = "hdmi-ddc";
+		bias-disable;
+	};
+
 	pins_nemc: nemc {
 		function = "nemc";
 		groups = "nemc-data", "nemc-cle-ale", "nemc-rd-we", "nemc-frd-fwe";
@@ -539,3 +577,42 @@ pins_mmc1: mmc1 {
 		bias-disable;
 	};
 };
+
+&hdmi {
+	status = "okay";
+
+	pinctrl-names = "default", "unwedge";
+	pinctrl-0 = <&pins_hdmi_ddc>;
+	pinctrl-1 = <&pins_hdmi_ddc_unwedge>;
+
+	hdmi-5v-supply = <&hdmi_power>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			dw_hdmi_in: endpoint {
+				remote-endpoint = <&lcd_out>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+			dw_hdmi_out: endpoint {
+				remote-endpoint = <&hdmi_con>;
+			};
+		};
+	};
+};
+
+&lcdc0 {
+	status = "okay";
+
+	port {
+		lcd_out: endpoint {
+			remote-endpoint = <&dw_hdmi_in>;
+		};
+	};
+};
-- 
2.33.0