Add support to enumerate SD in UHS mode on Tegra194.
Add required device-tree properties in SDMMC1 and SDMMC3
instances to enable dynamic pad voltage switching
and enumerate SD card in UHS-I modes.
Signed-off-by: Prathamesh Shete <pshete@xxxxxxxxxx>
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 34 ++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index b7d532841390..cc89f42bef38 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -3,6 +3,7 @@
#include <dt-bindings/gpio/tegra194-gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/mailbox/tegra186-hsp.h>
+#include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
#include <dt-bindings/pinctrl/pinctrl-tegra.h>
#include <dt-bindings/power/tegra194-powergate.h>
#include <dt-bindings/reset/tegra194-reset.h>
@@ -735,6 +736,9 @@
<&mc TEGRA194_MEMORY_CLIENT_SDMMCWA &emc>;
interconnect-names = "dma-mem", "write";
iommus = <&smmu TEGRA194_SID_SDMMC1>;
+ pinctrl-names = "sdmmc-3v3", "sdmmc-1v8";
+ pinctrl-0 = <&sdmmc1_3v3>;
+ pinctrl-1 = <&sdmmc1_1v8>;
nvidia,pad-autocal-pull-up-offset-3v3-timeout =
<0x07>;
nvidia,pad-autocal-pull-down-offset-3v3-timeout =
@@ -746,6 +750,10 @@
nvidia,pad-autocal-pull-down-offset-sdr104 = <0x00>;
nvidia,default-tap = <0x9>;
nvidia,default-trim = <0x5>;
+ sd-uhs-sdr25;
+ sd-uhs-sdr50;
+ sd-uhs-ddr50;
+ sd-uhs-sdr104;
status = "disabled";
};
@@ -762,6 +770,9 @@
<&mc TEGRA194_MEMORY_CLIENT_SDMMCW &emc>;
interconnect-names = "dma-mem", "write";
iommus = <&smmu TEGRA194_SID_SDMMC3>;
+ pinctrl-names = "sdmmc-3v3", "sdmmc-1v8";
+ pinctrl-0 = <&sdmmc3_3v3>;
+ pinctrl-1 = <&sdmmc3_1v8>;
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>;
@@ -774,6 +785,10 @@
nvidia,pad-autocal-pull-down-offset-sdr104 = <0x00>;
nvidia,default-tap = <0x9>;
nvidia,default-trim = <0x5>;
+ sd-uhs-sdr25;
+ sd-uhs-sdr50;
+ sd-uhs-ddr50;
+ sd-uhs-sdr104;
status = "disabled";
};
@@ -1303,6 +1318,25 @@
#interrupt-cells = <2>;
interrupt-controller;
+ sdmmc1_3v3: sdmmc1-3v3 {
+ pins = "sdmmc1-hv";
+ power-source = <TEGRA_IO_PAD_VOLTAGE_3V3>;
+ };
+
+ sdmmc1_1v8: sdmmc1-1v8 {
+ pins = "sdmmc1-hv";
+ power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>;
+ };
+ sdmmc3_3v3: sdmmc3-3v3 {
+ pins = "sdmmc3-hv";
+ power-source = <TEGRA_IO_PAD_VOLTAGE_3V3>;
+ };
+
+ sdmmc3_1v8: sdmmc3-1v8 {
+ pins = "sdmmc3-hv";
+ power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>;
+ };
+
};
smmu: iommu@12000000 {
--
2.17.1
