ARM: dts: Add SPI nodes to rk3288

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@rock-chips.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 2ac3488..82fc2fa 100644 (file)
--- 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,rk3288-spi", "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,rk3288-spi", "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,rk3288-spi", "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>;
@@ -720,6 +762,56 @@
                        };
                };
 
+               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>,