[PATCH v2 1/1] Revert "ARM: dts: Update pcie ranges for dra7"

[Frank Li]

This reverts commit c761028ef5e27f477fe14d2b134164c584fc21ee.

The commit being reverted updated the "ranges" property for the sake of
readability. However, this change is no longer appropriate due to the
following reasons:

- On many SoCs, the PCIe parent bus translates CPU addresses to different
values before passing them to the PCIe controller.
- The reverted commit introduced a fake address translation, which violates
the fundamental DTS principle: the device tree should reflect actual
hardware behavior.

Reverting this change prepares for the cleanup of the driver's
cpu_addr_fixup() hook.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
Change from v1 to v2:
- update commit message to add more detail.

Previous disscusion at
https://lore.kernel.org/linux-pci/20250314064642.fyf3jqylmc6meft7@uda0492258/
---
 arch/arm/boot/dts/ti/omap/dra7.dtsi | 29 +++++++++++------------------
 1 file changed, 11 insertions(+), 18 deletions(-)

diff --git a/arch/arm/boot/dts/ti/omap/dra7.dtsi b/arch/arm/boot/dts/ti/omap/dra7.dtsi
index b709703f6c0d4..711ce4c31bb1f 100644
--- a/arch/arm/boot/dts/ti/omap/dra7.dtsi
+++ b/arch/arm/boot/dts/ti/omap/dra7.dtsi
@@ -195,24 +195,22 @@ axi0: target-module@51000000 {
 			clock-names = "fck", "phy-clk", "phy-clk-div";
 			#size-cells = <1>;
 			#address-cells = <1>;
-			ranges = <0x51000000 0x51000000 0x3000>,
-				 <0x20000000 0x20000000 0x10000000>;
+			ranges = <0x51000000 0x51000000 0x3000
+				  0x0	     0x20000000 0x10000000>;
 			dma-ranges;
 			/**
 			 * To enable PCI endpoint mode, disable the pcie1_rc
 			 * node and enable pcie1_ep mode.
 			 */
 			pcie1_rc: pcie@51000000 {
-				reg = <0x51000000 0x2000>,
-				      <0x51002000 0x14c>,
-				      <0x20001000 0x2000>;
+				reg = <0x51000000 0x2000>, <0x51002000 0x14c>, <0x1000 0x2000>;
 				reg-names = "rc_dbics", "ti_conf", "config";
 				interrupts = <0 232 0x4>, <0 233 0x4>;
 				#address-cells = <3>;
 				#size-cells = <2>;
 				device_type = "pci";
-				ranges = <0x81000000 0 0x00000000 0x20003000 0 0x00010000>,
-					 <0x82000000 0 0x20013000 0x20013000 0 0x0ffed000>;
+				ranges = <0x81000000 0 0          0x03000 0 0x00010000
+					  0x82000000 0 0x20013000 0x13000 0 0xffed000>;
 				bus-range = <0x00 0xff>;
 				#interrupt-cells = <1>;
 				num-lanes = <1>;
@@ -235,10 +233,7 @@ pcie1_intc: interrupt-controller {
 			};
 
 			pcie1_ep: pcie_ep@51000000 {
-				reg = <0x51000000 0x28>,
-				      <0x51002000 0x14c>,
-				      <0x51001000 0x28>,
-				      <0x20001000 0x10000000>;
+				reg = <0x51000000 0x28>, <0x51002000 0x14c>, <0x51001000 0x28>, <0x1000 0x10000000>;
 				reg-names = "ep_dbics", "ti_conf", "ep_dbics2", "addr_space";
 				interrupts = <0 232 0x4>;
 				num-lanes = <1>;
@@ -269,21 +264,19 @@ axi1: target-module@51800000 {
 			reset-names = "rstctrl";
 			#size-cells = <1>;
 			#address-cells = <1>;
-			ranges = <0x51800000 0x51800000 0x3000>,
-				 <0x30000000 0x30000000 0x10000000>;
+			ranges = <0x51800000 0x51800000 0x3000
+				  0x0	     0x30000000 0x10000000>;
 			dma-ranges;
 			status = "disabled";
 			pcie2_rc: pcie@51800000 {
-				reg = <0x51800000 0x2000>,
-				      <0x51802000 0x14c>,
-				      <0x30001000 0x2000>;
+				reg = <0x51800000 0x2000>, <0x51802000 0x14c>, <0x1000 0x2000>;
 				reg-names = "rc_dbics", "ti_conf", "config";
 				interrupts = <0 355 0x4>, <0 356 0x4>;
 				#address-cells = <3>;
 				#size-cells = <2>;
 				device_type = "pci";
-				ranges = <0x81000000 0 0x00000000 0x30003000 0 0x00010000>,
-					 <0x82000000 0 0x30013000 0x30013000 0 0x0ffed000>;
+				ranges = <0x81000000 0 0          0x03000 0 0x00010000
+					  0x82000000 0 0x30013000 0x13000 0 0xffed000>;
 				bus-range = <0x00 0xff>;
 				#interrupt-cells = <1>;
 				num-lanes = <1>;
-- 
2.34.1