RE: [PATCH v3 3/8] mmc: renesas_sdhi: Add support for RZ/G3E SoC

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Hi Wolfram Sang,

Thanks for the feedback.

> -----Original Message-----
> From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Sent: 28 February 2025 09:42
> Subject: Re: [PATCH v3 3/8] mmc: renesas_sdhi: Add support for RZ/G3E SoC
> 
> On Thu, Feb 06, 2025 at 01:40:27PM +0000, Biju Das wrote:
> > The SDHI/eMMC IPs in the RZ/G3E SoC are similar to those in R-Car Gen3.
> > However, the RZ/G3E SD0 channel has Voltage level control and PWEN pin
> > support via SD_STATUS register.
> >
> > internal regulator support is added to control the voltage levels of
> > the SD pins via sd_iovs/sd_pwen bits in SD_STATUS register by
> > populating vqmmc-regulator child node.
> >
> > SD1 and SD2 channels have gpio regulator support and internal
> > regulator support. Selection of the regulator is based on the regulator phandle.
> > Similar case for SD0 fixed voltage (eMMC) that uses fixed regulator
> > and
> > SD0 non-fixed voltage (SD0) that uses internal regulator.
> 
> Okay, since I don't see a constant state of the regulator, let's just restore the original value as
> you do here. I mean it works.

OK.

> 
> > +			if (priv->rdev)
> > +				sd_ctrl_read32_rep(host, CTL_SD_STATUS, &sd_status, 1);
> 
> What about introducing sd_ctrl_read32?

Agreed, will introduce sd_ctrl_read32().

Cheers,
Biju




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