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Message-Id: <1727330873-17486-10-git-send-email-hongxing.zhu@nxp.com>
Date: Thu, 26 Sep 2024 14:07:53 +0800
From: Richard Zhu <hongxing.zhu@....com>
To: l.stach@...gutronix.de,
	kwilczynski@...nel.org,
	bhelgaas@...gle.com,
	lpieralisi@...nel.org,
	frank.li@....com,
	robh+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	festevam@...il.com,
	s.hauer@...gutronix.de
Cc: linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	kernel@...gutronix.de,
	imx@...ts.linux.dev,
	Richard Zhu <hongxing.zhu@....com>
Subject: [PATCH v3 9/9] arm64: dts: imx95: Add ref clock for i.MX95 PCIe

Add ref clock for i.MX95 PCIe.

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
Reviewed-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/imx95.dtsi | 25 ++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index 1bbf9a0468f6..83a6b0a8da3e 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -221,6 +221,13 @@ core5 {
 		};
 	};
 
+	clk_dummy: clock-dummy {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+		clock-output-names = "clk_dummy";
+	};
+
 	clk_ext1: clock-ext1 {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -1055,6 +1062,14 @@ smmu: iommu@...d0000 {
 			};
 		};
 
+		hsio_blk_ctl: syscon@...100c0 {
+			compatible = "nxp,imx95-hsio-blk-ctl", "syscon";
+			reg = <0x0 0x4c0100c0 0x0 0x4>;
+			#clock-cells = <1>;
+			clocks = <&clk_dummy>;
+			power-domains = <&scmi_devpd IMX95_PD_HSIO_TOP>;
+		};
+
 		pcie0: pcie@...00000 {
 			compatible = "fsl,imx95-pcie";
 			reg = <0 0x4c300000 0 0x10000>,
@@ -1082,8 +1097,9 @@ pcie0: pcie@...00000 {
 			clocks = <&scmi_clk IMX95_CLK_HSIO>,
 				 <&scmi_clk IMX95_CLK_HSIOPLL>,
 				 <&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
-				 <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
-			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux";
+				 <&scmi_clk IMX95_CLK_HSIOPCIEAUX>,
+				 <&hsio_blk_ctl 0>;
+			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux", "ref";
 			assigned-clocks =<&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
 					 <&scmi_clk IMX95_CLK_HSIOPLL>,
 					 <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
@@ -1149,8 +1165,9 @@ pcie1: pcie@...80000 {
 			clocks = <&scmi_clk IMX95_CLK_HSIO>,
 				 <&scmi_clk IMX95_CLK_HSIOPLL>,
 				 <&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
-				 <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
-			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux";
+				 <&scmi_clk IMX95_CLK_HSIOPCIEAUX>,
+				 <&hsio_blk_ctl 0>;
+			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux", "ref";
 			assigned-clocks =<&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
 					 <&scmi_clk IMX95_CLK_HSIOPLL>,
 					 <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
-- 
2.37.1


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