[v8,7/9] ARM: imx6: Update dts and binding for imx6sx pcie

Commit Message

Richard Zhu Oct. 20, 2014, 5:25 a.m. UTC

From: Richard Zhu <[e-mail]>

- imx6sx pcie phy has its own power regulator. Add the
pcie phy power suppy into im6sx pcie dts and binding.
- in order to align with imx6qdl's pcie dts, re-format
imx6sx pcie dts.
- in order to align with imx6qdl pcie dts format and
keep clean of imx6 pcie driver, keep the pcie phy clock
in imx6sx pcie dts, although it's the parent clk of the
pcie bus clock now, and would be enabled automatically
when pcie bus clock is enabled. secondly, it's
possible that the external osc maybe used as source
of the pcie_bus clk in board design in future.
- disp_axi clock is required by pcie inbound axi port.
Add one more clock named pcie_inbound_axi for imx6sx pcie.

Signed-off-by: Richard Zhu <[e-mail]>
---
 .../devicetree/bindings/pci/fsl,imx6q-pcie.txt     |  8 +++++-
 arch/arm/boot/dts/imx6sx.dtsi                      | 32 ++++++++++++----------
 2 files changed, 25 insertions(+), 15 deletions(-)

Patch

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
index 9455fd0..ad81179 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
@@ -4,7 +4,7 @@  This PCIe host controller is based on the Synopsis Designware PCIe IP
 and thus inherits all the common properties defined in designware-pcie.txt.
 
 Required properties:
-- compatible: "fsl,imx6q-pcie"
+- compatible: "fsl,imx6q-pcie", "fsl,imx6sx-pcie"
 - reg: base addresse and length of the pcie controller
 - interrupts: A list of interrupt outputs of the controller. Must contain an
   entry for each entry in the interrupt-names property.
@@ -13,6 +13,12 @@  Required properties:
 - clock-names: Must include the following additional entries:
 	- "pcie_phy"
 
+Additional required properties for imx6sx-pcie:
+- clock names: Must include the following additional entries:
+	- "pcie_inbound_axi"
+- power supplies:
+	- pcie-phy-supply: regulator used to power the PCIe PHY
+
 Example:
 
 	pcie@0x01000000 {
diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
index f4b9da6..0dfeade 100644
--- a/arch/arm/boot/dts/imx6sx.dtsi
+++ b/arch/arm/boot/dts/imx6sx.dtsi
@@ -599,9 +599,9 @@ 
 					anatop-max-voltage = <1450000>;
 				};
 
-				reg_pcie: regulator-vddpcie@140 {
+				reg_pcie_phy: regulator-vddpcie-phy@140 {
 					compatible = "fsl,anatop-regulator";
-					regulator-name = "vddpcie";
+					regulator-name = "vddpcie-phy";
 					regulator-min-microvolt = <725000>;
 					regulator-max-microvolt = <1450000>;
 					anatop-reg-offset = <0x140>;
@@ -1184,24 +1184,28 @@ 
 
 		pcie: pcie@0x08000000 {
 			compatible = "fsl,imx6sx-pcie", "snps,dw-pcie";
-			reg = <0x08ffc000 0x4000>; /* DBI */
+			reg = <0x08ffc000 0x4000>, <0x08f00000 0x80000>;
+			reg-names = "dbi", "config";
 			#address-cells = <3>;
 			#size-cells = <2>;
 			device_type = "pci";
-				  /* configuration space */
-			ranges = <0x00000800 0 0x08f00000 0x08f00000 0 0x00080000
-				  /* downstream I/O */
-				  0x81000000 0 0          0x08f80000 0 0x00010000
-				  /* non-prefetchable memory */
-				  0x82000000 0 0x08000000 0x08000000 0 0x00f00000>;
+			ranges = <0x81000000 0 0          0x08f80000 0 0x00010000 /* downstream I/O */
+				  0x82000000 0 0x08000000 0x08000000 0 0x00f00000>; /* non-prefetchable memory */
 			num-lanes = <1>;
-			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clks IMX6SX_CLK_PCIE_REF_125M>,
-				 <&clks IMX6SX_CLK_PCIE_AXI>,
+			interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+			                <0 0 0 2 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+			                <0 0 0 3 &intc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+			                <0 0 0 4 &intc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clks IMX6SX_CLK_PCIE_AXI>,
 				 <&clks IMX6SX_CLK_LVDS1_OUT>,
+				 <&clks IMX6SX_CLK_PCIE_REF_125M>,
 				 <&clks IMX6SX_CLK_DISPLAY_AXI>;
-			clock-names = "pcie_ref_125m", "pcie_axi",
-				      "lvds_gate", "display_axi";
+			clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_inbound_axi";
+			pcie-phy-supply = <&reg_pcie_phy>;
 			status = "disabled";
 		};
 	};