Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Marcel Ziswiler <marcel@ziswiler.com>
To:     linux-arm-kernel@lists.infradead.org
Cc:     Marcel Ziswiler <marcel.ziswiler@toradex.com>,
        Fabio Estevam <festevam@gmail.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Max Krummenacher <max.krummenacher@toradex.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Philippe Schenker <philippe.schenker@toradex.com>,
        Rob Herring <robh+dt@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v1 6/8] arm64: dts: verdin-imx8mp: add pcie support
Date:   Thu, 22 Sep 2022 18:29:23 +0200
Message-Id: <20220922162925.2368577-7-marcel@ziswiler.com>
In-Reply-To: <20220922162925.2368577-1-marcel@ziswiler.com>
References: <20220922162925.2368577-1-marcel@ziswiler.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Marcel Ziswiler <marcel.ziswiler@toradex.com>

Add PCIe support on the Verdin iMX8M Plus.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

---
This still relies on the PHY part landing [1] and the internal SYSPLL
mode getting sorted [2].

[1] https://lore.kernel.org/all/1663659498-5180-1-git-send-email-hongxing.zhu@nxp.com/
[2] https://lore.kernel.org/all/AS8PR04MB867657D03C61774096A5A1628C4C9@AS8PR04MB8676.eurprd04.prod.outlook.com/

 .../dts/freescale/imx8mp-verdin-dahlia.dtsi   |  9 +++++++-
 .../boot/dts/freescale/imx8mp-verdin.dtsi     | 22 ++++++++++++++++++-
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
index 4b8f86f63081..60f9dc4847db 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
@@ -67,7 +67,14 @@ &i2c4 {
 	/* TODO: Audio Codec */
 };
 
-/* TODO: Verdin PCIE_1 */
+/* Verdin PCIE_1 */
+&pcie {
+	status = "okay";
+};
+
+&pcie_phy {
+	status = "okay";
+};
 
 /* Verdin PWM_1 */
 &pwm1 {
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
index 7be7e922927b..160bb32cb5f7 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
@@ -734,7 +734,27 @@ eeprom_carrier_board: eeprom@57 {
 	};
 };
 
-/* TODO: Verdin PCIE_1 */
+/* Verdin PCIE_1 */
+&pcie {
+	assigned-clocks = <&clk IMX8MP_CLK_PCIE_AUX>;
+	assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_50M>;
+	assigned-clock-rates = <10000000>;
+	clocks = <&clk IMX8MP_CLK_HSIO_ROOT>,
+		 <&clk IMX8MP_CLK_PCIE_ROOT>,
+		 <&clk IMX8MP_CLK_HSIO_AXI>;
+	clock-names = "pcie", "pcie_aux", "pcie_bus";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie>;
+	/* PCIE_1_RESET# (SODIMM 244) */
+	reset-gpio = <&gpio4 19 GPIO_ACTIVE_LOW>;
+};
+
+&pcie_phy {
+	clocks = <&clk IMX8MP_CLK_HSIO_ROOT>;
+	clock-names = "ref";
+	fsl,clkreq-unsupported;
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_OUTPUT>;
+};
 
 /* Verdin PWM_1 */
 &pwm1 {
-- 
2.36.1