[PATCH] ARM: dts: imx: Enable PCIe and NVMe on DH i.MX8M Plus DHCOM PDK3

[Marek Vasut]

Enable PCIe/NVMe support on DH i.MX8M Plus DHCOM PDK3. Except for
the configuration options which are enabled, add slight adjustment
to board u-boot.dtsi, which is necessary as there is currently no
driver for the I2C PCIe clock generator. Since the generator is
strapped to be always on, it is possible to supplant the generator
functionality by fixed-clock.

Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: "NXP i.MX U-Boot Team" <uboot-imx at nxp.com>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Tom Rini <trini at konsulko.com>
Cc: u-boot at dh-electronics.com
Cc: u-boot at lists.denx.de
---
 arch/arm/dts/imx8mp-dhcom-pdk3-u-boot.dtsi | 12 ++++++++++++
 configs/imx8mp_dhcom_pdk3_defconfig        |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/arch/arm/dts/imx8mp-dhcom-pdk3-u-boot.dtsi b/arch/arm/dts/imx8mp-dhcom-pdk3-u-boot.dtsi
index 040f333c52d..b0b99d51856 100644
--- a/arch/arm/dts/imx8mp-dhcom-pdk3-u-boot.dtsi
+++ b/arch/arm/dts/imx8mp-dhcom-pdk3-u-boot.dtsi
@@ -4,3 +4,15 @@
  */
 
 #include "imx8mp-dhcom-u-boot.dtsi"
+
+/ {
+	clk_pcie100: clk-pcie100 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+};
+
+&pcie_phy {
+	clocks = <&clk_pcie100>;
+};
diff --git a/configs/imx8mp_dhcom_pdk3_defconfig b/configs/imx8mp_dhcom_pdk3_defconfig
index a42dc27aff8..019595edda8 100644
--- a/configs/imx8mp_dhcom_pdk3_defconfig
+++ b/configs/imx8mp_dhcom_pdk3_defconfig
@@ -31,6 +31,7 @@ CONFIG_ENV_OFFSET_REDUND=0xFF0000
 CONFIG_IMX_BOOTAUX=y
 CONFIG_SPL_IMX_ROMAPI_LOADADDR=0x48000000
 CONFIG_SYS_LOAD_ADDR=0x50000000
+CONFIG_PCI=y
 CONFIG_DEBUG_UART=y
 CONFIG_ENV_VARS_UBOOT_CONFIG=y
 CONFIG_FIT=y
@@ -104,6 +105,7 @@ CONFIG_CMD_MMC=y
 CONFIG_CMD_BKOPS_ENABLE=y
 CONFIG_CMD_MTD=y
 CONFIG_CMD_PART=y
+CONFIG_CMD_PCI=y
 CONFIG_CMD_READ=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_USB=y
@@ -218,7 +220,10 @@ CONFIG_DWC_ETH_QOS_IMX=y
 CONFIG_FEC_MXC=y
 CONFIG_RGMII=y
 CONFIG_MII=y
+CONFIG_NVME_PCI=y
+CONFIG_PCIE_DW_IMX=y
 CONFIG_PHY_IMX8MQ_USB=y
+CONFIG_PHY_IMX8M_PCIE=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
 CONFIG_PINCTRL_IMX8M=y
-- 
2.43.0