Revert "ARM64: dts: apalis-imx8: leave pcie/sata clk enabled"

This reverts commit 75e357e5be10c9f3e76c5061dc999e54d6ffa893.

By this commit, the WiFi instability was fixed, however, the
SATA interface was completely disabled. For sure it helped,
but we still need SATA.

Related-to: ELB-3534
Signed-off-by: Oleksii Bidnichenko <oleksii.bidnichenko@toradex.com>

1 files changed, 77 insertions, 17 deletions

diff --git a/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi b/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
index de57a065b4e2..c4b15f883c3a 100644
--- a/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
@@ -40,6 +40,37 @@
 		};
 	};
 
+	pcie_sata_refclk: sata-clock-generator {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
+	pcie_sata_refclk_gate: sata-ref-clock {
+		compatible = "gpio-gate-clock";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pcie_sata_refclk>;
+		#clock-cells = <0>;
+		clocks = <&pcie_sata_refclk>;
+		enable-gpios = <&lsio_gpio4 11 GPIO_ACTIVE_HIGH>;
+	};
+
+
+	pcie_wifi_refclk: wifi-clock-generator {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
+	pcie_wifi_refclk_gate: wifi-ref-clock {
+		compatible = "gpio-gate-clock";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pcie_wifi_refclk>;
+		#clock-cells = <0>;
+		clocks = <&pcie_wifi_refclk>;
+		enable-gpios = <&lsio_gpio2 11 GPIO_ACTIVE_HIGH>;
+	};
+
 	regulators {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -1434,8 +1465,6 @@
 };
 
 &lsio_gpio4 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_pcie_sata_refclk>;
 	gpio-line-names = "MXM3_18",
 			  "MXM3_11/GPIO5",
 			  "MXM3_13/GPIO6",
@@ -1463,19 +1492,6 @@
 			  "MXM3_291",
 			  "MXM3_289",
 			  "MXM3_287";
-
-	/*
-	 * This will make sure the PCIe clock for the SoC and SATA gets enabled
-	 * and stays enabled.
-	 * If this clock gets disabled after boot, in some cases PCIe does not
-	 * after a reboot work.
-	 */
-	pcie_sata_clock {
-		gpio-hog;
-		gpios = <11 GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "SATA and PCIe clock";
-	};
 };
 
 &lsio_gpio5 {
@@ -1558,6 +1574,18 @@
 &pciea {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_reset_moci>;
+	clocks = <&pciea_lpcg 0>,
+		 <&pciea_lpcg 1>,
+		 <&pciea_lpcg 2>,
+		 <&phyx2_lpcg 0>,
+		 <&phyx2_crr0_lpcg 0>,
+		 <&pciea_crr2_lpcg 0>,
+		 <&misc_crr5_lpcg 0>,
+		 <&pcie_sata_refclk_gate>;
+	clock-names = "pcie", "pcie_bus", "pcie_inbound_axi",
+		      "pcie_phy", "phy_per", "pcie_per", "misc_per",
+		      "pcie_ext";
+
 	ext_osc = <1>;
 	fsl,max-link-speed = <1>;
 	reset-gpio = <&lsio_gpio0 30 GPIO_ACTIVE_LOW>;
@@ -1567,8 +1595,21 @@
 /* On-module Wi-Fi */
 &pcieb {
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_pcieb &pinctrl_wifi &pinctrl_pcie_wifi_refclk>;
-	clkreq-gpio = <&lsio_gpio2 11 GPIO_ACTIVE_HIGH>;
+	pinctrl-0 = <&pinctrl_pcieb &pinctrl_wifi>;
+	clocks = <&pcieb_lpcg 0>,
+		 <&pcieb_lpcg 1>,
+		 <&pcieb_lpcg 2>,
+		 <&phyx2_lpcg 1>,
+		 <&phyx2_lpcg 0>,
+		 <&phyx2_crr0_lpcg 0>,
+		 <&pcieb_crr3_lpcg 0>,
+		 <&pciea_crr2_lpcg 0>,
+		 <&misc_crr5_lpcg 0>,
+		 <&pcie_wifi_refclk_gate>;
+	clock-names = "pcie", "pcie_bus", "pcie_inbound_axi",
+		      "pcie_phy", "pcie_phy_pclk", "phy_per",
+		      "pcie_per", "pciex2_per", "misc_per",
+		      "pcie_ext";
 	epdev_on-supply = <&reg_module_wifi>;
 	ext_osc = <1>;
 	fsl,max-link-speed = <1>;
@@ -1641,6 +1682,25 @@
 
 /* Apalis SATA1 */
 &sata {
+	clocks = <&sata_lpcg 0>,
+		 <&phyx1_lpcg 0>,
+		 <&phyx1_lpcg 1>,
+		 <&phyx1_lpcg 2>,
+		 <&phyx2_crr0_lpcg 0>,
+		 <&phyx1_crr1_lpcg 0>,
+		 <&pciea_crr2_lpcg 0>,
+		 <&pcieb_crr3_lpcg 0>,
+		 <&sata_crr4_lpcg 0>,
+		 <&misc_crr5_lpcg 0>,
+		 <&phyx2_lpcg 0>,
+		 <&phyx2_lpcg 1>,
+		 <&phyx1_lpcg 3>,
+		 <&pcie_sata_refclk_gate>;
+	clock-names = "sata", "sata_ref", "epcs_tx", "epcs_rx",
+		      "per_clk0", "per_clk1", "per_clk2",
+		      "per_clk3", "per_clk4", "per_clk5",
+		      "phy_pclk0", "phy_pclk1", "phy_apbclk",
+		      "sata_ext";
 	ext_osc = <1>;
 };