On Mon, Jul 24, 2023 at 06:51:17AM +0000, Bough Chen wrote: > > -----Original Message----- > > From: Shawn Guo <shawnguo@xxxxxxxxxx> > > Sent: 2023年7月18日 11:32 > > To: Peng Fan (OSS) <peng.fan@xxxxxxxxxxx> > > Cc: robh+dt@xxxxxxxxxx; krzysztof.kozlowski+dt@xxxxxxxxxx; > > s.hauer@xxxxxxxxxxxxxx; kernel@xxxxxxxxxxxxxx; festevam@xxxxxxxxx; > > dl-linux-imx <linux-imx@xxxxxxx>; devicetree@xxxxxxxxxxxxxxx; > > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Bough > > Chen <haibo.chen@xxxxxxx>; Sherry Sun <sherry.sun@xxxxxxx>; Peng Fan > > <peng.fan@xxxxxxx> > > Subject: Re: [PATCH 09/10] arm64: dts: imx8ulp-evk: add 100MHz/200MHz > > pinctrl setting for eMMC > > > > On Sun, Jun 25, 2023 at 08:42:37PM +0800, Peng Fan (OSS) wrote: > > > From: Haibo Chen <haibo.chen@xxxxxxx> > > > > > > Add 100MHz and 200MHz pinctrl setting for eMMC, and enable 8 bit bus > > > mode to config the eMMC work at HS400ES mode. > > > > > > Also update to use Standard Drive Strength for USDHC pad to get a > > > better signal quality per Hardware team suggests. > > > > > > Reviewed-by: Sherry Sun <sherry.sun@xxxxxxx> > > > Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx> > > > Signed-off-by: Peng Fan <peng.fan@xxxxxxx> > > > --- > > > arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 26 > > > ++++++++++--------- > > > 1 file changed, 14 insertions(+), 12 deletions(-) > > > > > > diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts > > > b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts > > > index e459dc35e469..ab7af705bbca 100644 > > > --- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts > > > +++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts > > > @@ -121,9 +121,11 @@ &lpuart5 { > > > }; > > > > > > &usdhc0 { > > > - pinctrl-names = "default", "sleep"; > > > + pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep"; > > > pinctrl-0 = <&pinctrl_usdhc0>; > > > pinctrl-1 = <&pinctrl_usdhc0>; > > > + pinctrl-2 = <&pinctrl_usdhc0>; > > > + pinctrl-3 = <&pinctrl_usdhc0>; > > > > All three speed modes use the same pinctrl? > > Yes, the IOMUX on imx8ulp do not support config different drive strength. So here use the same pinctrl. Mention that in the commit log or with a comment would be helpful. Shawn