Re: [PATCH v1] arm64: dts: ti: verdin-am62: use SD1 CD as GPIO
From: Francesco Dolcini
Date: Tue Mar 19 2024 - 08:41:29 EST
Hello Nishanth,
On Tue, Mar 19, 2024 at 07:07:17AM -0500, Nishanth Menon wrote:
> On 15:49-20240312, Francesco Dolcini wrote:
> > From: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
> >
> > TI SDHCI IP has a hardware debounce timer of 1 second as described in
> > commit 7ca0f166f5b2 ("mmc: sdhci_am654: Add workaround for card detect
> > debounce timer"), because of this the boot time increases of up to 1
> > second.
> >
> > Workaround the issue the same way that is done on
> > arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts, using the SD1 CD as
> > GPIO.
> >
> > Suggested-by: Nishanth Menon <nm@xxxxxx>
> > Reported-by: João Paulo Silva Gonçalves <joao.goncalves@xxxxxxxxxxx>
> > Closes: https://lore.kernel.org/all/0e81af80de3d55e72f79af83fa5db87f5c9938f8.camel@xxxxxxxxxxx/
> > Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 12 ++++++++++--
> > 1 file changed, 10 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
> > index e8d8857ad51f..a9bf2c17f95a 100644
> > --- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
> > +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
> > @@ -1441,8 +1447,10 @@ &sdhci0 {
> > /* Verdin SD_1 */
> > &sdhci1 {
> > pinctrl-names = "default";
> > - pinctrl-0 = <&pinctrl_sdhci1>;
> > + pinctrl-0 = <&pinctrl_sdhci1>, <&pinctrl_sd1_cd_gpio>;
> > + cd-gpios = <&main_gpio1 48 GPIO_ACTIVE_LOW>;
> > disable-wp;
> > + ti,fails-without-test-cd;
> > vmmc-supply = <®_sdhc1_vmmc>;
> > vqmmc-supply = <®_sdhc1_vqmmc>;
> > status = "disabled";
>
> Minor style comment based on recently added https://docs.kernel.org/devicetree/bindings/dts-coding-style.html#order-of-properties-in-device-node
>
> ti,fails-without-test-cd comes after vqmmc-supply and above status.
Whoops, you are right, of course, thanks. I'll send a v2 once the merge
window closes and rc1 is out.
Francesco