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Date: Tue, 12 Dec 2017 14:28:15 +0800
From: Leo Wen <leo.wen@...k-chips.com>
To: mchehab@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
davem@...emloft.net, gregkh@...uxfoundation.org,
rdunlap@...radead.org
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
eddie.cai@...k-chips.com, Leo Wen <leo.wen@...k-chips.com>
Subject: [PATCH 2/2] dt-bindings: Document the Rockchip RK1608 bindings
Add DT bindings documentation for Rockchip RK1608.
Signed-off-by: Leo Wen <leo.wen@...k-chips.com>
---
Documentation/devicetree/bindings/media/rk1608.txt | 143 +++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 144 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/rk1608.txt
diff --git a/Documentation/devicetree/bindings/media/rk1608.txt b/Documentation/devicetree/bindings/media/rk1608.txt
new file mode 100644
index 0000000..bda5cdb
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/rk1608.txt
@@ -0,0 +1,143 @@
+Rockchip RK1608 as a PreISP to link on Soc
+------------------------------------------
+
+Required properties:
+
+- compatible : "rockchip,rk1608";
+- reg : SPI slave address of the rk1608;
+- clocks : Must contain an entry for each entry in clock-names;
+- clock-names : Must contain "mclk" for the device's master clock;
+- reset-gpio : GPIO connected to reset pin;
+- irq-gpio : GPIO connected to irq pin;
+- sleepst-gpio : GPIO connected to sleepst pin;
+- wakeup-gpio : GPIO connected to wakeup pin;
+- powerdown-gpio : GPIO connected to powerdown pin;
+- pinctrl-names : Should contain only one value - "default";
+- pinctrl-0 : Pin control group to be used for this controller;
+
+Optional properties:
+
+- spi-max-frequency : Maximum SPI clocking speed of the device;
+ (for RK1608)
+- spi-min-frequency : Minimum SPI clocking speed of the device;
+ (for RK1608)
+
+The device node should contain one 'port' child node with one child 'endpoint'
+node, according to the bindings defined in Documentation/devicetree/bindings/
+media/video-interfaces.txt. The following are properties specific to those
+nodes.
+
+endpoint node
+-------------
+
+- data-lanes : (optional) specifies MIPI CSI-2 data lanes as covered in
+ video-interfaces.txt. If present it should be <1> - the device
+ supports only one data lane without re-mapping.
+
+Note1: Since no data is generated in RK1608，so this is meaningful that you need
+a extra sensor (such as a camera) mounted on RK1608. You need to use endpoint@x
+to match these sensors.
+
+Note2:You must set the current value of the spi pins to be 8mA, if they are not.
+
+Example:
+
+&spi0 {
+ status = "okay";
+
+ spi_rk1608@00 {
+ compatible = "rockchip,rk1608";
+ reg = <0>;
+ status = "okay";
+ spi-max-frequency = <24000000>;
+ spi-min-frequency = <12000000>;
+ clocks = <&cru SCLK_SPI0>;
+ clock-names = "mclk";
+
+ reset-gpio = <&gpio6 0 GPIO_ACTIVE_HIGH>;
+ irq-gpio = <&gpio6 2 GPIO_ACTIVE_HIGH>;
+ sleepst-gpio = <&gpio6 1 GPIO_ACTIVE_HIGH>;
+ wakeup-gpio = <&gpio6 4 GPIO_ACTIVE_HIGH>;
+ powerdown-gpio = <&gpio8 0 GPIO_ACTIVE_HIGH>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&rk1608_irq_gpios &rk1608_wake_gpios
+ &rk1608_sleep_gpios>;
+
+ port {
+ isp_mipi_out: endpoint {
+ remote-endpoint = <&isp_mipi_in>;
+ data-lanes = <1>;
+ };
+ /*Example: we have two cameras*/
+ sensor_in0: endpoint@0 {
+ remote-endpoint = <&xxx0>;
+ };
+
+ sensor_in1: endpoint@1 {
+ remote-endpoint = <&xxx1>;
+ };
+ };
+ };
+};
+
+&mipi_phy_rx0 {
+ bus-width = <2>;
+ status = "okay";
+
+ port {
+ isp_mipi_in: endpoint {
+ remote-endpoint = <&isp_mipi_out>;
+ data-lanes = <1>;
+ link-frequencies =
+ /bits/ 64 <1000000000>;
+ };
+ };
+};
+
+&pinctrl {
+ rk1608_irq_gpios {
+ rk1608_irq_gpios: rk1608_irq_gpios {
+ rockchip,pins = <6 2 RK_FUNC_GPIO &pcfg_pull_none>;
+ rockchip,pull = <1>;
+ };
+ };
+
+ rk1608_wake_gpios {
+ rk1608_wake_gpios: rk1608_wake_gpios {
+ rockchip,pins = <6 4 RK_FUNC_GPIO &pcfg_pull_none>;
+ rockchip,pull = <1>;
+ };
+ };
+
+ rk1608_sleep_gpios {
+ rk1608_sleep_gpios: rk1608_sleep_gpios {
+ rockchip,pins = <6 1 RK_FUNC_GPIO &pcfg_pull_none>;
+ rockchip,pull = <1>;
+ rockchip,drive = <0>;
+ };
+ };
+
+ pcfg_pull_none_8ma: pcfg-pull-none-8ma {
+ bias-disable;
+ drive-strength = <8>;
+ };
+
+ spi0 {
+ spi0_clk: spi0-clk {
+ rockchip,pins = <5 12 RK_FUNC_1 &pcfg_pull_none_8ma>;
+ };
+ spi0_cs0: spi0-cs0 {
+ rockchip,pins = <5 13 RK_FUNC_1 &pcfg_pull_none_8ma>;
+ };
+ spi0_tx: spi0-tx {
+ rockchip,pins = <5 14 RK_FUNC_1 &pcfg_pull_none_8ma>;
+ };
+ spi0_rx: spi0-rx {
+ rockchip,pins = <5 15 RK_FUNC_1 &pcfg_pull_none_8ma>;
+ };
+ spi0_cs1: spi0-cs1 {
+ rockchip,pins = <5 16 RK_FUNC_1 &pcfg_pull_none_8ma>;
+ };
+ };
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 48235d8..196a9ff 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -133,6 +133,7 @@ M: Leo Wen <leo.wen@...k-chips.com>
S: Maintained
F: drivers/media/platform/spi/rk1608.c
F: drivers/media/platform/spi/rk1608.h
+F: Documentation/devicetree/bindings/media/rk1608.txt
3C59X NETWORK DRIVER
M: Steffen Klassert <klassert@...hematik.tu-chemnitz.de>
--
2.7.4
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