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[v5,4/4] arm64: dts: imx8mm: Add dbi2 and atu reg for i.MX8MM PCIe EP

Message ID 1723534943-28499-5-git-send-email-hongxing.zhu@nxp.com (mailing list archive)
State Handled Elsewhere
Delegated to: Krzysztof WilczyƄski
Headers show
Series Add dbi2 and atu for i.MX8M PCIe EP | expand

Commit Message

Richard Zhu Aug. 13, 2024, 7:42 a.m. UTC
Add dbi2 and iatu reg for i.MX8MM PCIe EP.

For i.MX8M PCIe EP, the dbi2 and atu addresses are pre-defined in the
driver. This method is not good.

In commit b7d67c6130ee ("PCI: imx6: Add iMX95 Endpoint (EP) support"),
Frank suggests to fetch the dbi2 and atu from DT directly. This commit is
preparation to do that for i.MX8MM PCIe EP.

These changes wouldn't break driver function. When "dbi2" and "atu"
properties are present, i.MX PCIe driver would fetch the according base
addresses from DT directly. If only two reg properties are provided, i.MX
PCIe driver would fall back to the old method.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
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Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 9535dedcef59..4de3bf22902b 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -1375,9 +1375,11 @@  pcie0: pcie@33800000 {
 
 		pcie0_ep: pcie-ep@33800000 {
 			compatible = "fsl,imx8mm-pcie-ep";
-			reg = <0x33800000 0x400000>,
-			      <0x18000000 0x8000000>;
-			reg-names = "dbi", "addr_space";
+			reg = <0x33800000 0x100000>,
+			      <0x18000000 0x8000000>,
+			      <0x33900000 0x100000>,
+			      <0x33b00000 0x100000>;
+			reg-names = "dbi", "addr_space", "dbi2", "atu";
 			num-lanes = <1>;
 			interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-names = "dma";