From: Ulf Hansson <ulf.hansson@linaro.org>
To: andy.tang@nxp.com
Cc: adrian.hunter@intel.com, linux-mmc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mmc: sdhci-of-esdhc: limit the SDHC clock frequency
Date: Wed, 7 Dec 2022 13:37:32 +0100 [thread overview]
Message-ID: <CAPDyKForCE1VODVt5KAdcZPK0n0Gxw575aow6nDo62yYFX_qUQ@mail.gmail.com> (raw)
In-Reply-To: <20221202075905.25363-1-andy.tang@nxp.com>
On Fri, 2 Dec 2022 at 08:44, <andy.tang@nxp.com> wrote:
>
> From: Andy Tang <andy.tang@nxp.com>
>
> The highest clock frequency for eMMC HS200 mode on ls1043a
> is 116.7Mhz according to its specification.
> So add the limit to gate the frequency.
>
> Signed-off-by: Andy Tang <andy.tang@nxp.com>
Applied for next, thanks!
Kind regards
Uffe
> ---
> v2: change the author to andy tang
>
> drivers/mmc/host/sdhci-of-esdhc.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
> index 00542dd74c07..1fd4ae10862d 100644
> --- a/drivers/mmc/host/sdhci-of-esdhc.c
> +++ b/drivers/mmc/host/sdhci-of-esdhc.c
> @@ -43,6 +43,12 @@ static const struct esdhc_clk_fixup ls1021a_esdhc_clk = {
> .max_clk[MMC_TIMING_SD_HS] = 46500000,
> };
>
> +static const struct esdhc_clk_fixup ls1043a_esdhc_clk = {
> + .sd_dflt_max_clk = 25000000,
> + .max_clk[MMC_TIMING_UHS_SDR104] = 116700000,
> + .max_clk[MMC_TIMING_MMC_HS200] = 116700000,
> +};
> +
> static const struct esdhc_clk_fixup ls1046a_esdhc_clk = {
> .sd_dflt_max_clk = 25000000,
> .max_clk[MMC_TIMING_UHS_SDR104] = 167000000,
> @@ -64,6 +70,7 @@ static const struct esdhc_clk_fixup p1010_esdhc_clk = {
>
> static const struct of_device_id sdhci_esdhc_of_match[] = {
> { .compatible = "fsl,ls1021a-esdhc", .data = &ls1021a_esdhc_clk},
> + { .compatible = "fsl,ls1043a-esdhc", .data = &ls1043a_esdhc_clk},
> { .compatible = "fsl,ls1046a-esdhc", .data = &ls1046a_esdhc_clk},
> { .compatible = "fsl,ls1012a-esdhc", .data = &ls1012a_esdhc_clk},
> { .compatible = "fsl,p1010-esdhc", .data = &p1010_esdhc_clk},
> --
> 2.25.1
>
next prev parent reply other threads:[~2022-12-07 12:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-02 7:59 [PATCH] mmc: sdhci-of-esdhc: limit the SDHC clock frequency andy.tang
2022-12-07 12:37 ` Ulf Hansson [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-11-24 6:46 andy.tang
2022-11-29 8:04 ` Adrian Hunter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAPDyKForCE1VODVt5KAdcZPK0n0Gxw575aow6nDo62yYFX_qUQ@mail.gmail.com \
--to=ulf.hansson@linaro.org \
--cc=adrian.hunter@intel.com \
--cc=andy.tang@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).