| Message ID | 20210529033749.6250-1-a-govindraju@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v4] arm64: dts: ti: k3-am65: Add support for UHS-I modes in MMCSD1 subsystem | expand |
On Sat, 29 May 2021 09:07:49 +0530, Aswath Govindraju wrote: > UHS-I speed modes are supported in AM65 S.R. 2.0 SoC[1]. > > Add support by removing the no-1-8-v tag and including the voltage > regulator device tree nodes for power cycling. > > However, the 4 bit interface of AM65 SR 1.0 cannot be supported at 3.3 V or > 1.8 V because of erratas i2025 and i2026 [2]. As the SD card is the primary > boot mode for development usecases, continue to enable SD card and disable > UHS-I modes in it to minimize any ageing issues happening because of > erratas. > > [...] Hi Aswath Govindraju, I have applied the following to branch ti-k3-dts-next on [1]. Thank you! [1/1] arm64: dts: ti: k3-am65: Add support for UHS-I modes in MMCSD1 subsystem commit: 79b08ae7c411840ea5a9fba349025d217e700576 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent up the chain during the next merge window (or sooner if it is a relevant bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. [1] git://git.kernel.org/pub/scm/linux/kernel/git/nmenon/linux.git
diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi index f4ec9ed52939..d90abda1de84 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi @@ -555,6 +555,7 @@ pinctrl-0 = <&main_mmc1_pins_default>; ti,driver-strength-ohm = <50>; disable-wp; + no-1-8-v; }; &usb0 { diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index 6cd3131eb9ff..f97fc00c00ca 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -301,7 +301,6 @@ ti,otap-del-sel = <0x2>; ti,trm-icp = <0x8>; dma-coherent; - no-1-8-v; }; scm_conf: scm-conf@100000 { diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts index 97c344088483..60e43fd7af12 100644 --- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts +++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts @@ -85,6 +85,38 @@ gpios = <&wkup_gpio0 27 GPIO_ACTIVE_LOW>; }; }; + + evm_12v0: fixedregulator-evm12v0 { + /* main supply */ + compatible = "regulator-fixed"; + regulator-name = "evm_12v0"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + regulator-always-on; + regulator-boot-on; + }; + + vcc3v3_io: fixedregulator-vcc3v3io { + /* Output of TPS54334 */ + compatible = "regulator-fixed"; + regulator-name = "vcc3v3_io"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + regulator-boot-on; + vin-supply = <&evm_12v0>; + }; + + vdd_mmc1_sd: fixedregulator-sd { + compatible = "regulator-fixed"; + regulator-name = "vdd_mmc1_sd"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-boot-on; + enable-active-high; + vin-supply = <&vcc3v3_io>; + gpio = <&pca9554 4 GPIO_ACTIVE_HIGH>; + }; }; &wkup_pmx0 { @@ -327,6 +359,7 @@ * disable sdhci1 */ &sdhci1 { + vmmc-supply = <&vdd_mmc1_sd>; pinctrl-names = "default"; pinctrl-0 = <&main_mmc1_pins_default>; ti,driver-strength-ohm = <50>;