[PATCH v2 8/9] rockchip: rk3568-rock-3a: Enable PCIe and NVMe support

[Jonas Karlman]

Add missing pinctrl and defconfig options to enable PCIe and NVMe
support on Radxa ROCK 3 Model A.

Use of pcie20m1_pins and pcie30x2m1_pins ensure IO mux selection M1.
The following pcie_reset_h and pcie3x2_reset_h ensure GPIO func is
restored to the perstn pin, a workaround to avoid having to define
a new rockchip,pins.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
v2:
- Update commit message
- Disable pcie2x1 to work around a possible sys freeze issue

 arch/arm/dts/rk3568-rock-3a-u-boot.dtsi | 16 ++++++++++++++++
 configs/rock-3a-rk3568_defconfig        |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm/dts/rk3568-rock-3a-u-boot.dtsi b/arch/arm/dts/rk3568-rock-3a-u-boot.dtsi
index bbf54f888fa0..bbfce7f4c247 100644
--- a/arch/arm/dts/rk3568-rock-3a-u-boot.dtsi
+++ b/arch/arm/dts/rk3568-rock-3a-u-boot.dtsi
@@ -36,8 +36,24 @@
 	bootph-all;
 };
 
+&pcie2x1 {
+	pinctrl-0 = <&pcie20m1_pins &pcie_reset_h>;
+	/* Shared vpcie3v3-supply may cause a sys freeze, disable for now */
+	status = "disabled";
+};
+
+&pcie3x2 {
+	pinctrl-0 = <&pcie30x2m1_pins &pcie3x2_reset_h>;
+};
+
 &pinctrl {
 	bootph-all;
+
+	pcie {
+		pcie3x2_reset_h: pcie3x2-reset-h {
+			rockchip,pins = <2 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &pcfg_pull_none {
diff --git a/configs/rock-3a-rk3568_defconfig b/configs/rock-3a-rk3568_defconfig
index 64864a300153..16775015afa2 100644
--- a/configs/rock-3a-rk3568_defconfig
+++ b/configs/rock-3a-rk3568_defconfig
@@ -23,6 +23,7 @@ CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI=y
 CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_PCI=y
 CONFIG_DEBUG_UART=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
@@ -46,6 +47,7 @@ CONFIG_CMD_GPIO=y
 CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
+CONFIG_CMD_PCI=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_PMIC=y
@@ -70,6 +72,8 @@ CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_XTX=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_GMAC_ROCKCHIP=y
+CONFIG_NVME_PCI=y
+CONFIG_PCIE_DW_ROCKCHIP=y
 CONFIG_PHY_ROCKCHIP_INNO_USB2=y
 CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
 CONFIG_SPL_PINCTRL=y
-- 
2.40.1