From 05079f35de4bdd5c0341687de4d5dce55ee15485 Mon Sep 17 00:00:00 2001
From: Thierry Reding <treding@nvidia.com>
Date: Wed, 21 Feb 2024 17:17:16 +0100
Subject: [PATCH] UPSTREAM: arm64: tegra: Add AXI configuration for Tegra234
 MGBE

The MGBE devices found on Tegra234 need their AXI interface configured
to operate at peak performance. Ideally we would do this in the driver
based off the compatible string, but the DT bindings already specify a
separate mechanism, so reuse that.

Bug 3820445
Bug 4293378

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Change-Id: I206b4f47b0243b21064df1dedcad05e9f316507f
Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/3082845
(cherry picked from commit e8a5ee3d34777658bddfcf2e2ffc1f77be73c189)
Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/3083874
Reviewed-by: Brad Griffis <bgriffis@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
---
 tegra234.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tegra234.dtsi b/tegra234.dtsi
index 3f16595..84c7415 100644
--- a/tegra234.dtsi
+++ b/tegra234.dtsi
@@ -1461,6 +1461,14 @@
 			iommus = <&smmu_niso0 TEGRA234_SID_MGBE>;
 			power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEA>;
 			status = "disabled";
+
+			snps,axi-config = <&mgbe0_axi_setup>;
+
+			mgbe0_axi_setup: stmmac-axi-config {
+				snps,blen = <256 128 64 32>;
+				snps,rd_osr_lmt = <63>;
+				snps,wr_osr_lmt = <63>;
+			};
 		};
 
 		ethernet@6900000 {
@@ -1495,6 +1503,14 @@
 			iommus = <&smmu_niso0 TEGRA234_SID_MGBE_VF1>;
 			power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEB>;
 			status = "disabled";
+
+			snps,axi-config = <&mgbe1_axi_setup>;
+
+			mgbe1_axi_setup: stmmac-axi-config {
+				snps,blen = <256 128 64 32>;
+				snps,rd_osr_lmt = <63>;
+				snps,wr_osr_lmt = <63>;
+			};
 		};
 
 		ethernet@6a00000 {
@@ -1529,6 +1545,14 @@
 			iommus = <&smmu_niso0 TEGRA234_SID_MGBE_VF2>;
 			power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEC>;
 			status = "disabled";
+
+			snps,axi-config = <&mgbe2_axi_setup>;
+
+			mgbe2_axi_setup: stmmac-axi-config {
+				snps,blen = <256 128 64 32>;
+				snps,rd_osr_lmt = <63>;
+				snps,wr_osr_lmt = <63>;
+			};
 		};
 
 		ethernet@6b00000 {