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charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Francesco, Just for your awareness, I stumbled on this patch this morning and I actually did the exact same thing on verdin-imx8mp a while ago: c8d29601fea3080a42731e8535b929a93afa107e Not sure this causes any side-effects maybe you guys want to investigate further about this. I needed it due to the strange requirements I had (described in commit message). =46rom my point of view it is correct to link the vqmmc-supply so the voltage can be set also to something different than the default fusing values. Philippe On Thu, 2025-04-17 at 15:03 +0200, Francesco Dolcini wrote: > Hello Wojciech, > thanks very much for your patch. >=20 > On Thu, Apr 17, 2025 at 01:20:11PM +0200, Wojciech Dubowik wrote: > > Link LDO5 labeled reg_nvcc_sd from PMIC to align with > > hardware configuration specified in the datasheet. > >=20 > > Without this definition LDO5 will be powered down, disabling > > SD card after bootup. This has been introduced in commit > > f5aab0438ef1 (regulator: pca9450: Fix enable register for LDO5). > >=20 > > Fixes: f5aab0438ef1 (regulator: pca9450: Fix enable register for > > LDO5) > > Cc: stable@vger.kernel.org > >=20 > > Signed-off-by: Wojciech Dubowik > > --- > > =C2=A0arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi | 1 + > > =C2=A01 file changed, 1 insertion(+) > >=20 > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi > > b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi > > index 7251ad3a0017..6307c5caf3bc 100644 > > --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi > > @@ -785,6 +785,7 @@ &usdhc2 { > > =C2=A0 pinctrl-2 =3D <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_cd>; > > =C2=A0 pinctrl-3 =3D <&pinctrl_usdhc2_sleep>, <&pinctrl_usdhc2_cd_sleep= >; > > =C2=A0 vmmc-supply =3D <®_usdhc2_vmmc>; > > + vqmmc-supply =3D <®_nvcc_sd>; >=20 > I am worried just doing this will have some side effects. >=20 > Before this patch, the switch between 1v8 and 3v3 was done because we > have a GPIO, connected to the PMIC, controlled by the USDHC2 instance > (MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT, see pinctrl_usdhc2). >=20 > With your change both the PMIC will be programmed with a different > voltage over i2c and the GPIO will also toggle. It does not sound > like > what we want to do. >=20 > Maybe we should have a "regulator-gpio" with vin-supply =3D > <®_nvcc_sd>, as we recently did here > https://lore.kernel.org/all/20250414123827.428339-1- > ivitro@gmail.com/T/#m2964f1126a6732a66a6e704812f2b786e8237354 > ? >=20 > Francesco >=20 --=-bv0dprSH/GrawrKRQEFJ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: quoted-printable -----BEGIN PGP SIGNATURE-----=0A= =0A= iQHTBAABCAA9FiEEPaCxfVqqNYSPnRhRjRDjR2hoXxoFAmgHS+wfHHBoaWxpcHBl=0A= LnNjaGVua2VyQGltcHVsc2luZy5jaAAKCRCNEONHaGhfGiXSC/93jb8UBpkmksar=0A= iC7kDaw/+2Knlo4DgmYwYcDOSbJq7a0hlUTpBdXdwVOIhH1ogWD/mwYTXNtcm9/L=0A= DutWr5V7ZRZ4fwGAaj4yuaIfLSlwl9/tteH3eLRTPa0jRUBGEr+Uv3tD2e5WgsGH=0A= w2an4BdzOVWWthaaxq2pXzGT57Hx9zv3kJTlLDB8AotnSMiC0slBSOjvzsyqkl3K=0A= 2EZgBgBe1z2jEdIYDWvQyjGwm7fv4ngNHLUZjw91c1HPorJQClJ59ymtoyVsUTIH=0A= nnIGGJ+gMVVoUvPHkiEOaUpH096MwPPDHePcbS2TeTgIhxnvDvXKVSiWZbA9j9cB=0A= iz86RZUESkbs94XKtTCSFX4bogd/nGhWBPS+J1ECty6V2evViFPNCcx2v/qdR/AE=0A= /ueV/PvTaIULO99nhJOvonyPKgdOCwpaj6MXAL5QkQXS4xDfoqSyvPd9EgU4Bz5L=0A= UH5sSjOs9yWMBj5Gzp6Z2kYMTfm8V55qIZMpzrkftxiZNLxoHGA=3D=0A= =3DKwvA=0A= -----END PGP SIGNATURE-----=0A= --=-bv0dprSH/GrawrKRQEFJ--