182 lines
4.5 KiB
Diff
182 lines
4.5 KiB
Diff
From 5c39d2e1b293d8d18fe5b140ea1949d27d36d00f Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= <megi@xff.cz>
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Date: Tue, 23 Jun 2020 19:43:24 +0200
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Subject: [PATCH 026/389] ARM: dts: sun8i-a83t-tbs-a711: Add camera sensors
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(HM5065, GC2145)
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The tablet has two cameras, that can be switched between. Add
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support for the both of them.
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Sensor is connected via parallel bus to CSI and via I2C bus to
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PE14/PE15 pins. Enable CSI module and add the node for HM5065
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camera sensor.
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Camera sensors are connected via I2C to PE14/PE15 pins on A83T.
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Unfortunately while the A83T datasheet suggests TWI2 I2C controller
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can be configured to have SDA/SCL on these pins, this configuration
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doesn't work in reality. We need to either use CCI I2C controller
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that is part of the CSI module, or as is done in this patch, use GPIO
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based bitbanging I2C driver.
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Reduce camera IOVDD voltage.
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Force dvdd-csi-r/f regulators to 1.8V.
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This is required by camera sensors that are connected to them.
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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---
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arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 101 +++++++++++++++++++++-
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1 file changed, 99 insertions(+), 2 deletions(-)
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diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
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index 3d1493ce018d..62355c497b74 100644
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--- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
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+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
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@@ -70,6 +70,16 @@ backlight: backlight {
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default-brightness-level = <9>;
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};
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+ i2c_gpio: i2c-gpio {
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+ compatible = "i2c-gpio";
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+ /* PE15 = sda, PE14 = scl */
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+ sda-gpios = <&pio 4 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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+ scl-gpios = <&pio 4 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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+ i2c-gpio,delay-us = <1>; /* ~100 kHz */
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ };
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+
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panel {
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compatible = "tbs,a711-panel", "panel-lvds";
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backlight = <&backlight>;
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@@ -220,6 +230,13 @@ link2_codec: codec {
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};
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};
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+&ccu {
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+ /* Use a stable clock source with known fixed rate for MCLK */
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+ assigned-clocks = <&ccu CLK_CSI_MCLK>;
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+ assigned-clock-parents = <&osc24M>;
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+ assigned-clock-rates = <24000000>;
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+};
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+
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&cpu0 {
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cpu-supply = <®_dcdc2>;
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};
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@@ -228,6 +245,37 @@ &cpu100 {
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cpu-supply = <®_dcdc3>;
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};
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+&csi {
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&csi_8bit_parallel_pins>, <&csi_mclk_pin>;
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+ status = "okay";
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+
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+ port {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ csi_hm5065_ep: endpoint@0 {
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+ reg = <0>;
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+ remote-endpoint = <&hm5065_ep>;
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+ bus-width = <8>;
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+ data-active = <1>;
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+ pclk-sample = <0>;
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+ hsync-active = <0>;
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+ vsync-active = <1>;
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+ };
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+
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+ csi_gc2145_ep: endpoint@1 {
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+ reg = <1>;
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+ remote-endpoint = <&gc2145_ep>;
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+ bus-width = <8>;
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+ hsync-active = <1>;
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+ vsync-active = <1>;
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+ data-active = <1>;
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+ pclk-sample = <1>;
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+ };
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+ };
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+};
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+
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&de {
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status = "okay";
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};
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@@ -288,6 +336,55 @@ npc100: nfc@28 {
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};
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};
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+&i2c_gpio {
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+ hm5065: rear-camera@1f {
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+ compatible = "himax,hm5065";
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+ reg = <0x1f>;
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+ clocks = <&ccu CLK_CSI_MCLK>;
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+ clock-names = "xclk";
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+ IOVDD-supply = <®_dldo3>;
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+ AVDD-supply = <®_dldo4>;
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+ DVDD-supply = <®_eldo3>;
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+ AFVDD-supply = <®_dldo3>;
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+ reset-gpios = <&pio 4 18 GPIO_ACTIVE_LOW>; /* PE18 */
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+ enable-gpios = <&pio 4 19 GPIO_ACTIVE_HIGH>; /* PE19 */
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+
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+ port {
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+ hm5065_ep: endpoint {
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+ remote-endpoint = <&csi_hm5065_ep>;
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+ bus-width = <8>;
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+ data-active = <1>;
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+ pclk-sample = <0>;
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+ hsync-active = <0>;
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+ vsync-active = <1>;
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+ };
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+ };
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+ };
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+
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+ gc2145: front-camera@3c {
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+ compatible = "galaxycore,gc2145";
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+ reg = <0x3c>;
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+ clocks = <&ccu CLK_CSI_MCLK>;
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+ clock-names = "xclk";
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+ IOVDD-supply = <®_dldo3>;
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+ AVDD-supply = <®_dldo4>;
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+ DVDD-supply = <®_eldo3>;
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+ reset-gpios = <&pio 4 16 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>; /* PE16 */
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+ enable-gpios = <&pio 4 17 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>; /* PE17 */
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+
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+ port {
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+ gc2145_ep: endpoint {
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+ remote-endpoint = <&csi_gc2145_ep>;
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+ bus-width = <8>;
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+ hsync-active = <1>;
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+ vsync-active = <1>;
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+ data-active = <1>;
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+ pclk-sample = <1>;
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+ };
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+ };
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+ };
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+};
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+
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&i2s0 {
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status = "okay";
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pinctrl-names = "default";
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@@ -509,7 +606,7 @@ ®_drivevbus {
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};
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®_eldo1 {
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- regulator-min-microvolt = <1200000>;
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+ regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "pvdd-nfc";
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regulator-always-on;
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@@ -522,7 +619,7 @@ ®_eldo2 {
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};
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®_eldo3 {
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- regulator-min-microvolt = <1200000>;
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+ regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "dvdd-csi-f";
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};
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--
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2.35.3
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