[PATCH v5 8/8] ARM: dts: rockchip: support the spi for rk3036

Caesar Wang
2016-02-02T03:41:46Z

This patch adds the needed spi node for rk3036 dts.

We have to use the 4 bus emmc to work if someone want to support
the spi devices, since the pins are re-used by emmc data[5-8] and spi.
In some caseswe need to support the spi devices, that will waste the
emmc performance.

Moment, the kylin/evb hasn't the spi devices to work, so maybe we need wait
the new required to enable in kylin/evb board.

Anyway, the spi should be needed land in rk3036 dts.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>

---

Changes in v5:
- Remove the unused, as Heiko comments on https://patchwork.kernel.org/patch/8147761/
- Modify the commit.

Changes in v4:
- Add this patch included in kylin series patches.

arch/arm/boot/dts/rk3036.dtsi | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)

diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi
index 532f232..30bb316 100644
--- a/arch/arm/boot/dts/rk3036.dtsi
+++ b/arch/arm/boot/dts/rk3036.dtsi
@@ -60,6 +60,7 @@
serial0 = &uart0;
serial1 = &uart1;
serial2 = &uart2;
+ spi = &spi;
};

memory {
@@ -485,6 +486,21 @@
status = "disabled";
};

+ spi: spi@20074000 {
+ compatible = "rockchip,rockchip-spi";
+ reg = <0x20074000 0x1000>;
+ interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
+ clocks =<&cru PCLK_SPI>, <&cru SCLK_SPI>;
+ clock-names = "apb-pclk","spi_pclk";
+ dmas = <&pdma 8>, <&pdma 9>;
+ dma-names = "tx", "rx";
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_txd &spi_rxd &spi_clk &spi_cs0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
pinctrl: pinctrl {
compatible = "rockchip,rk3036-pinctrl";
rockchip,grf = <&grf>;
@@ -723,5 +739,29 @@
};
/* no rts / cts for uart2 */
};
+
+ spi {
+ spi_txd:spi-txd {
+ rockchip,pins = <1 29 RK_FUNC_3 &pcfg_pull_default>;
+ };
+
+ spi_rxd:spi-rxd {
+ rockchip,pins = <1 28 RK_FUNC_3 &pcfg_pull_default>;
+ };
+
+ spi_clk:spi-clk {
+ rockchip,pins = <2 0 RK_FUNC_2 &pcfg_pull_default>;
+ };
+
+ spi_cs0:spi-cs0 {
+ rockchip,pins = <1 30 RK_FUNC_3 &pcfg_pull_default>;
+
+ };
+
+ spi_cs1:spi-cs1 {
+ rockchip,pins = <1 31 RK_FUNC_3 &pcfg_pull_default>;
+
+ };
+ };
};
};
--
1.9.1