arm64: tegra: Add SDMMC auto-calibration settings

Add SDMMC initial pad offsets used by auto calibration process.

Add SDMMC fixed drive strengths for Tegra210, Tegra186 and
Tegra194 which are used when calibration timeouts.

Fixed drive strengths are based on Pre SI Analysis of the pads.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

3 files changed, 91 insertions, 2 deletions

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 22815db4a3ed..169aee59ceac 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -315,6 +315,8 @@
 		nvidia,pad-autocal-pull-down-offset-hs400 = <0x05>;
 		nvidia,pad-autocal-pull-up-offset-1v8-timeout = <0x0a>;
 		nvidia,pad-autocal-pull-down-offset-1v8-timeout = <0x0a>;
+		nvidia,pad-autocal-pull-up-offset-3v3-timeout = <0x0a>;
+		nvidia,pad-autocal-pull-down-offset-3v3-timeout = <0x0a>;
 		nvidia,default-tap = <0x5>;
 		nvidia,default-trim = <0x9>;
 		nvidia,dqs-trim = <63>;
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 607b5bde94f0..99eaf9bc3d43 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -303,6 +303,17 @@
 			clock-names = "sdhci";
 			resets = <&bpmp TEGRA194_RESET_SDMMC1>;
 			reset-names = "sdhci";
+			nvidia,pad-autocal-pull-up-offset-3v3-timeout =
+									<0x07>;
+			nvidia,pad-autocal-pull-down-offset-3v3-timeout =
+									<0x07>;
+			nvidia,pad-autocal-pull-up-offset-1v8-timeout = <0x06>;
+			nvidia,pad-autocal-pull-down-offset-1v8-timeout =
+									<0x07>;
+			nvidia,pad-autocal-pull-up-offset-sdr104 = <0x00>;
+			nvidia,pad-autocal-pull-down-offset-sdr104 = <0x00>;
+			nvidia,default-tap = <0x9>;
+			nvidia,default-trim = <0x5>;
 			status = "disabled";
 		};
 
@@ -314,6 +325,18 @@
 			clock-names = "sdhci";
 			resets = <&bpmp TEGRA194_RESET_SDMMC3>;
 			reset-names = "sdhci";
+			nvidia,pad-autocal-pull-up-offset-1v8 = <0x00>;
+			nvidia,pad-autocal-pull-down-offset-1v8 = <0x7a>;
+			nvidia,pad-autocal-pull-up-offset-3v3-timeout = <0x07>;
+			nvidia,pad-autocal-pull-down-offset-3v3-timeout =
+									<0x07>;
+			nvidia,pad-autocal-pull-up-offset-1v8-timeout = <0x06>;
+			nvidia,pad-autocal-pull-down-offset-1v8-timeout =
+									<0x07>;
+			nvidia,pad-autocal-pull-up-offset-sdr104 = <0x00>;
+			nvidia,pad-autocal-pull-down-offset-sdr104 = <0x00>;
+			nvidia,default-tap = <0x9>;
+			nvidia,default-trim = <0x5>;
 			status = "disabled";
 		};
 
@@ -325,6 +348,17 @@
 			clock-names = "sdhci";
 			resets = <&bpmp TEGRA194_RESET_SDMMC4>;
 			reset-names = "sdhci";
+			nvidia,pad-autocal-pull-up-offset-hs400 = <0x00>;
+			nvidia,pad-autocal-pull-down-offset-hs400 = <0x00>;
+			nvidia,pad-autocal-pull-up-offset-1v8-timeout = <0x0a>;
+			nvidia,pad-autocal-pull-down-offset-1v8-timeout =
+									<0x0a>;
+			nvidia,pad-autocal-pull-up-offset-3v3-timeout = <0x0a>;
+			nvidia,pad-autocal-pull-down-offset-3v3-timeout =
+									<0x0a>;
+			nvidia,default-tap = <0x8>;
+			nvidia,default-trim = <0x14>;
+			nvidia,dqs-trim = <40>;
 			status = "disabled";
 		};
 
diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index b5858b5ea052..ef2725f898c2 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -477,6 +477,48 @@
 		compatible = "nvidia,tegra210-pinmux";
 		reg = <0x0 0x700008d4 0x0 0x29c>, /* Pad control registers */
 		      <0x0 0x70003000 0x0 0x294>; /* Mux registers */
+		sdmmc1_3v3_drv: sdmmc1-3v3-drv {
+			sdmmc1 {
+				nvidia,pins = "drive_sdmmc1";
+				nvidia,pull-down-strength = <0x8>;
+				nvidia,pull-up-strength = <0x8>;
+			};
+		};
+		sdmmc1_1v8_drv: sdmmc1-1v8-drv {
+			sdmmc1 {
+				nvidia,pins = "drive_sdmmc1";
+				nvidia,pull-down-strength = <0x4>;
+				nvidia,pull-up-strength = <0x3>;
+			};
+		};
+		sdmmc2_1v8_drv: sdmmc2-1v8-drv {
+			sdmmc2 {
+				nvidia,pins = "drive_sdmmc2";
+				nvidia,pull-down-strength = <0x10>;
+				nvidia,pull-up-strength = <0x10>;
+			};
+		};
+		sdmmc3_3v3_drv: sdmmc3-3v3-drv {
+			sdmmc3 {
+				nvidia,pins = "drive_sdmmc3";
+				nvidia,pull-down-strength = <0x8>;
+				nvidia,pull-up-strength = <0x8>;
+			};
+		};
+		sdmmc3_1v8_drv: sdmmc3-1v8-drv {
+			sdmmc3 {
+				nvidia,pins = "drive_sdmmc3";
+				nvidia,pull-down-strength = <0x4>;
+				nvidia,pull-up-strength = <0x3>;
+			};
+		};
+		sdmmc4_1v8_drv: sdmmc4-1v8-drv {
+			sdmmc4 {
+				nvidia,pins = "drive_sdmmc4";
+				nvidia,pull-down-strength = <0x10>;
+				nvidia,pull-up-strength = <0x10>;
+			};
+		};
 	};
 
 	/*
@@ -1051,9 +1093,12 @@
 		clock-names = "sdhci";
 		resets = <&tegra_car 14>;
 		reset-names = "sdhci";
-		pinctrl-names = "sdmmc-3v3", "sdmmc-1v8";
+		pinctrl-names = "sdmmc-3v3", "sdmmc-1v8",
+				"sdmmc-3v3-drv", "sdmmc-1v8-drv";
 		pinctrl-0 = <&sdmmc1_3v3>;
 		pinctrl-1 = <&sdmmc1_1v8>;
+		pinctrl-2 = <&sdmmc1_3v3_drv>;
+		pinctrl-3 = <&sdmmc1_1v8_drv>;
 		nvidia,pad-autocal-pull-up-offset-3v3 = <0x00>;
 		nvidia,pad-autocal-pull-down-offset-3v3 = <0x7d>;
 		nvidia,pad-autocal-pull-up-offset-1v8 = <0x7b>;
@@ -1076,6 +1121,8 @@
 		clock-names = "sdhci";
 		resets = <&tegra_car 9>;
 		reset-names = "sdhci";
+		pinctrl-names = "sdmmc-1v8-drv";
+		pinctrl-0 = <&sdmmc2_1v8_drv>;
 		nvidia,pad-autocal-pull-up-offset-1v8 = <0x05>;
 		nvidia,pad-autocal-pull-down-offset-1v8 = <0x05>;
 		nvidia,default-tap = <0x8>;
@@ -1091,9 +1138,12 @@
 		clock-names = "sdhci";
 		resets = <&tegra_car 69>;
 		reset-names = "sdhci";
-		pinctrl-names = "sdmmc-3v3", "sdmmc-1v8";
+		pinctrl-names = "sdmmc-3v3", "sdmmc-1v8",
+				"sdmmc-3v3-drv", "sdmmc-1v8-drv";
 		pinctrl-0 = <&sdmmc3_3v3>;
 		pinctrl-1 = <&sdmmc3_1v8>;
+		pinctrl-2 = <&sdmmc3_3v3_drv>;
+		pinctrl-3 = <&sdmmc3_1v8_drv>;
 		nvidia,pad-autocal-pull-up-offset-3v3 = <0x00>;
 		nvidia,pad-autocal-pull-down-offset-3v3 = <0x7d>;
 		nvidia,pad-autocal-pull-up-offset-1v8 = <0x7b>;
@@ -1111,6 +1161,9 @@
 		clock-names = "sdhci";
 		resets = <&tegra_car 15>;
 		reset-names = "sdhci";
+		pinctrl-names = "sdmmc-3v3-drv", "sdmmc-1v8-drv";
+		pinctrl-0 = <&sdmmc4_1v8_drv>;
+		pinctrl-1 = <&sdmmc4_1v8_drv>;
 		nvidia,pad-autocal-pull-up-offset-1v8 = <0x05>;
 		nvidia,pad-autocal-pull-down-offset-1v8 = <0x05>;
 		nvidia,default-tap = <0x8>;