From: huang lin <hl@xxxxxxxxxxxxxx>
This adds basic SPI nodes to the base rk3288 device tree file.
A few notes:
* It's assumed that most users of the SPI ports are using chip select
0. Thus the default pinctrl for the ports enables chip select 0
(but not chip select 1 on ports that have it). If a board wants to
use chip select 1 or wants a GPIO chip select the board should
override the pinctrl (just like boards can override UART pinctrl if
they have hardware flow control).
* Since SPI DMA support appears broken and the SPI works fine without
DMA we don't include the DMA references. That can come in a later
change.
Signed-off-by: huang lin <hl@xxxxxxxxxxxxxx>
Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>
---
arch/arm/boot/dts/rk3288.dtsi | 92 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 5f866e0..75d1f4c 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -34,6 +34,9 @@
serial2 = &uart2;
serial3 = &uart3;
serial4 = &uart4;
+ spi0 = &spi0;
+ spi1 = &spi1;
+ spi2 = &spi2;
};
cpus {
@@ -128,6 +131,45 @@
status = "disabled";
};
+ spi0: spi@ff110000 {
+ compatible = "rockchip,rk3066-spi";
+ clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
+ clock-names = "spiclk", "apb_pclk";
+ interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_clk &spi0_tx &spi0_rx &spi0_cs0>;
+ reg = <0xff110000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ spi1: spi@ff120000 {
+ compatible = "rockchip,rk3066-spi";
+ clocks = <&cru SCLK_SPI1>, <&cru PCLK_SPI1>;
+ clock-names = "spiclk", "apb_pclk";
+ interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi1_clk &spi1_tx &spi1_rx &spi1_cs0>;
+ reg = <0xff120000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ spi2: spi@ff130000 {
+ compatible = "rockchip,rk3066-spi";
+ clocks = <&cru SCLK_SPI2>, <&cru PCLK_SPI2>;
+ clock-names = "spiclk", "apb_pclk";
+ interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi2_clk &spi2_tx &spi2_rx &spi2_cs0>;
+ reg = <0xff130000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
i2c1: i2c@ff140000 {
compatible = "rockchip,rk3288-i2c";
reg = <0xff140000 0x1000>;
@@ -700,6 +742,56 @@
};
};
+ spi0 {
+ spi0_clk: spi0-clk {
+ rockchip,pins = <5 12 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi0_cs0: spi0-cs0 {
+ rockchip,pins = <5 13 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi0_tx: spi0-tx {
+ rockchip,pins = <5 14 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi0_rx: spi0-rx {
+ rockchip,pins = <5 15 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi0_cs1: spi0-cs1 {
+ rockchip,pins = <5 16 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ };
+ spi1 {
+ spi1_clk: spi1-clk {
+ rockchip,pins = <7 12 RK_FUNC_2 &pcfg_pull_up>;
+ };
+ spi1_cs0: spi1-cs0 {
+ rockchip,pins = <7 13 RK_FUNC_2 &pcfg_pull_up>;
+ };
+ spi1_rx: spi1-rx {
+ rockchip,pins = <7 14 RK_FUNC_2 &pcfg_pull_up>;
+ };
+ spi1_tx: spi1-tx {
+ rockchip,pins = <7 15 RK_FUNC_2 &pcfg_pull_up>;
+ };
+ };
+
+ spi2 {
+ spi2_cs1: spi2-cs1 {
+ rockchip,pins = <8 3 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi2_clk: spi2-clk {
+ rockchip,pins = <8 6 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi2_cs0: spi2-cs0 {
+ rockchip,pins = <8 7 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi2_rx: spi2-rx {
+ rockchip,pins = <8 8 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ spi2_tx: spi2-tx {
+ rockchip,pins = <8 9 RK_FUNC_1 &pcfg_pull_up>;
+ };
+ };
+
uart0 {
uart0_xfer: uart0-xfer {
rockchip,pins = <4 16 RK_FUNC_1 &pcfg_pull_up>,
--
2.1.0.rc2.206.gedb03e5
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