On 18:42-20210322, Aswath Govindraju wrote:
> The following speed modes are now supported in J7200 SoC,
> - HS200 and HS400 modes at 1.8 V card voltage, in MMCSD0 subsystem [1].
> - UHS-I speed modes in MMCSD1 subsystem [1].
>
> Add support for UHS-I modes by adding voltage regulator device tree nodes
> and corresponding pinmux details, to power cycle and voltage switch cards.
> Set respective tags in sdhci0 and remove no-1-8-v tag from sdhci1
> device tree nodes.
>
> Also update the delay values for various speed modes supported, based on
> the revised january 2021 J7200 datasheet[2].
>
> [1] - section 12.3.6.1.1 MMCSD Features, in
> https://www.ti.com/lit/ug/spruiu1a/spruiu1a.pdf,
> (SPRUIU1A – JULY 2020 – REVISED JANUARY 2021)
>
> [2] - https://www.ti.com/lit/ds/symlink/dra821u.pdf,
> (SPRSP57B – APRIL 2020 – REVISED JANUARY 2021)
>
> Signed-off-by: Aswath Govindraju <[email protected]>
> ---
> .../dts/ti/k3-j7200-common-proc-board.dts | 42 +++++++++++++++++++
> arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 14 ++++++-
> 2 files changed, 54 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> index b493f939b09a..de8c06bdc825 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> @@ -16,6 +16,29 @@
> stdout-path = "serial2:115200n8";
> bootargs = "console=ttyS2,115200n8
> earlycon=ns16550a,mmio32,0x02800000";
> };
> +
> + vdd_mmc1: fixedregulator-sd {
> + compatible = "regulator-fixed";
> + regulator-name = "vdd_mmc1";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + enable-active-high;
> + gpios = <&exp2 2 GPIO_ACTIVE_HIGH>;
is that gpio ?
I'd encourage to use vin-supply as well.
> + };
> +
> + vdd_sd_dv: gpio-regulator-vdd-sd-dv {
What does this drive? TLV71033 ?
> + compatible = "regulator-gpio";
> + regulator-name = "vdd_sd_dv";
> + pinctrl-names = "default";
> + pinctrl-0 = <&vdd_sd_dv_pins_default>;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
normally, I'd encourage to use vin-supply as well.
> + gpios = <&main_gpio0 55 GPIO_ACTIVE_HIGH>;
> + states = <1800000 0x0
> + 3300000 0x1>;
states = <1800000 0x0>,
<3300000 0x1>;
Can you look at j721e as reference?
> + };
> };
>
Kishon,
can you look closer at this series?
--
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5
849D 1736 249D
