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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>
This commit is contained in:
Sowjanya Komatineni 2019-01-10 14:46:02 -08:00 committed by Thierry Reding
parent 6ab6a4d220
commit 4e0f122991
3 changed files with 91 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/boot/dts/nvidia/tegra186.dtsi
View File

@ -315,6 +315,8 @@ sdmmc4: sdhci@3460000 {
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>;

34
arch/arm64/boot/dts/nvidia/tegra194.dtsi
View File

@ -303,6 +303,17 @@ sdmmc1: sdhci@3400000 {
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 @@ sdmmc3: sdhci@3440000 {
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 @@ sdmmc4: sdhci@3460000 {
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";
};

57
arch/arm64/boot/dts/nvidia/tegra210.dtsi
View File

@ -477,6 +477,48 @@ pinmux: pinmux@700008d4 {
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 @@ sdhci@700b0000 {
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 @@ sdhci@700b0200 {
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 @@ sdhci@700b0400 {
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 @@ sdhci@700b0600 {
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>;