[PATCH] ARM: dts: imx: Enable PCIe and NVMe on Data Modul i.MX8M Mini eDM SBC

[Marek Vasut]

Enable PCIe/NVMe support on Data Modul i.MX8M Mini eDM SBC. 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>
---
NOTE: Would be nice to have in v2025.01
---
Cc: "NXP i.MX U-Boot Team" <uboot-imx at nxp.com>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Quentin Schulz <quentin.schulz at cherry.de>
Cc: Sean Anderson <seanga2 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 lists.denx.de
---
 .../arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi | 15 +++++++++++++++
 configs/imx8mm_data_modul_edm_sbc_defconfig       |  6 ++++++
 2 files changed, 21 insertions(+)

diff --git a/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi b/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi
index f5e98bf7487..3a4f7d01b9e 100644
--- a/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi
@@ -16,6 +16,12 @@
 		dmo,ram-coding-gpios = <&gpio2 8 0>, <&gpio2 1 0>, <&gpio2 0 0>;
 	};
 
+	clk_pcie100: clk-pcie100 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		wdt = <&wdog1>;
@@ -35,6 +41,15 @@
 	bootph-pre-ram;
 };
 
+&pcie_phy {
+	clocks = <&clk_pcie100>;
+};
+
+&pcie0 {
+	clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>,
+		 <&clk_pcie100>;
+};
+
 &pinctrl_hog_sbc {
 	bootph-pre-ram;
 };
diff --git a/configs/imx8mm_data_modul_edm_sbc_defconfig b/configs/imx8mm_data_modul_edm_sbc_defconfig
index 260cdd4a5e3..25795701d54 100644
--- a/configs/imx8mm_data_modul_edm_sbc_defconfig
+++ b/configs/imx8mm_data_modul_edm_sbc_defconfig
@@ -5,12 +5,18 @@ CONFIG_ARCH_IMX8M=y
 CONFIG_TARGET_IMX8MM_DATA_MODUL_EDM_SBC=y
 CONFIG_CI_UDC=y
 CONFIG_CLK_IMX8MM=y
+CONFIG_CMD_PCI=y
 CONFIG_DEFAULT_DEVICE_TREE="imx8mm-data-modul-edm-sbc"
 CONFIG_DEFAULT_FDT_FILE="imx8mm-data-modul-edm-sbc.dtb"
 CONFIG_DM_PMIC_BD71837=y
 CONFIG_DM_REGULATOR_BD71837=y
 CONFIG_IMX_CONFIG="board/data_modul/imx8mm_edm_sbc/imximage.cfg"
+CONFIG_NVME_PCI=y
+CONFIG_PCI=y
+CONFIG_PCIE_DW_IMX=y
+CONFIG_PHY=y
 CONFIG_PHYLIB=y
+CONFIG_PHY_IMX8M_PCIE=y
 CONFIG_PREBOOT="run dmo_preboot"
 CONFIG_SDP_LOADADDR=0x60000000
 CONFIG_SPL_BSS_MAX_SIZE=0x2000
-- 
2.45.2