[PATCH v2 1/1] arm64: dts: tqma8mqml: add PCIe support

[Alexander Stein <alexander.stein@ew.tq-group.com>]

Add PCIe support to TQMa8MxML series.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
This goes on top of the series recently applied to pci/dwc [1]:
[PATCH v7 0/8] Add the imx8m pcie phy driver and imx8mm pcie support

Changes in v2:
* rebased to Shawn's current imx/dt64 (as of 2022/01/26)

[1] https://patchwork.kernel.org/project/linux-pci/list/?series=589031&state=*

 .../dts/freescale/imx8mm-tqma8mqml-mba8mx.dts | 19 +++++++++++++++++++
 .../boot/dts/freescale/imx8mm-tqma8mqml.dtsi  |  5 +++++
 arch/arm64/boot/dts/freescale/mba8mx.dtsi     |  6 ++++++
 3 files changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
index 7844878788f4..286d2df01cfa 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
@@ -5,6 +5,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/phy/phy-imx8-pcie.h>
 #include "imx8mm-tqma8mqml.dtsi"
 #include "mba8mx.dtsi"
 
@@ -58,6 +59,24 @@ expander2: gpio@27 {
 	};
 };
 
+&pcie_phy {
+	clocks = <&pcie0_refclk>;
+	status = "okay";
+};
+
+&pcie0 {
+	reset-gpio = <&expander0 14 GPIO_ACTIVE_LOW>;
+	clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>,
+		<&pcie0_refclk>;
+	clock-names = "pcie", "pcie_aux", "pcie_bus";
+	assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>,
+				<&clk IMX8MM_CLK_PCIE1_CTRL>;
+	assigned-clock-rates = <10000000>, <250000000>;
+	assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>,
+				<&clk IMX8MM_SYS_PLL2_250M>;
+	status = "okay";
+};
+
 &sai3 {
 	assigned-clocks = <&clk IMX8MM_CLK_SAI3>;
 	assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
index 284e62acc0b4..16ee9b5179e6 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
@@ -227,6 +227,11 @@ eeprom0: eeprom@57 {
 	};
 };
 
+&pcie_phy {
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
+	fsl,clkreq-unsupported;
+};
+
 &usdhc3 {
 	pinctrl-names = "default", "state_100mhz", "state_200mhz";
 	pinctrl-0 = <&pinctrl_usdhc3>;
diff --git a/arch/arm64/boot/dts/freescale/mba8mx.dtsi b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
index f27e3c8de916..3ea34b3a55f8 100644
--- a/arch/arm64/boot/dts/freescale/mba8mx.dtsi
+++ b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
@@ -66,6 +66,12 @@ led2: led2 {
 		};
 	};
 
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
 	reg_hub_vbus: regulator-hub-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "MBA8MX_HUB_VBUS";
-- 
2.25.1