| Message ID | 1465456218-28354-4-git-send-email-gregory.clement@free-electrons.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Am Donnerstag, den 09.06.2016, 09:10 +0200 schrieb Gregory CLEMENT: > Given its name the voltage_switch() should be called for any > voltage. However currently it is only called for the 1.8V case. > > That means that the current implementation of the callback could have > made this assumption. In order to not adding a regression when the > voltage_switch() function will be called for the other voltage > targets, > this patch ensure that the code of the current callback won't be > executed > for the other case than 1.8V. > This isn't necessary, it's fine to re-execute the pad calibration for any voltage switch. Regards, Lucas > Cc: Lucas Stach <dev@lynxeye.de> > Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> > --- > drivers/mmc/host/sdhci-tegra.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci- > tegra.c > index bcc0de47fe7e..01f58296125e 100644 > --- a/drivers/mmc/host/sdhci-tegra.c > +++ b/drivers/mmc/host/sdhci-tegra.c > @@ -302,6 +302,10 @@ static void tegra_sdhci_voltage_switch(struct > sdhci_host *host) > struct sdhci_tegra *tegra_host = > sdhci_pltfm_priv(pltfm_host); > const struct sdhci_tegra_soc_data *soc_data = tegra_host- > >soc_data; > > + /* initially this function was called only for the 1.8V case > */ > + if (host->mmc->ios.signal_voltage != MMC_SIGNAL_VOLTAGE_180) > + return; > + > if (soc_data->nvquirks & NVQUIRK_HAS_PADCALIB) > tegra_host->pad_calib_required = true; > } -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Lucas, On jeu., juin 09 2016, Lucas Stach <dev@lynxeye.de> wrote: > Am Donnerstag, den 09.06.2016, 09:10 +0200 schrieb Gregory CLEMENT: >> Given its name the voltage_switch() should be called for any >> voltage. However currently it is only called for the 1.8V case. >> >> That means that the current implementation of the callback could have >> made this assumption. In order to not adding a regression when the >> voltage_switch() function will be called for the other voltage >> targets, >> this patch ensure that the code of the current callback won't be >> executed >> for the other case than 1.8V. >> > This isn't necessary, it's fine to re-execute the pad calibration for > any voltage switch. Thanks for your feedback, so I can remove this patch from the series. Gregory > > Regards, > Lucas > >> Cc: Lucas Stach <dev@lynxeye.de> >> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> >> --- >> drivers/mmc/host/sdhci-tegra.c | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci- >> tegra.c >> index bcc0de47fe7e..01f58296125e 100644 >> --- a/drivers/mmc/host/sdhci-tegra.c >> +++ b/drivers/mmc/host/sdhci-tegra.c >> @@ -302,6 +302,10 @@ static void tegra_sdhci_voltage_switch(struct >> sdhci_host *host) >> struct sdhci_tegra *tegra_host = >> sdhci_pltfm_priv(pltfm_host); >> const struct sdhci_tegra_soc_data *soc_data = tegra_host- >> >soc_data; >> >> + /* initially this function was called only for the 1.8V case >> */ >> + if (host->mmc->ios.signal_voltage != MMC_SIGNAL_VOLTAGE_180) >> + return; >> + >> if (soc_data->nvquirks & NVQUIRK_HAS_PADCALIB) >> tegra_host->pad_calib_required = true; >> }
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index bcc0de47fe7e..01f58296125e 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -302,6 +302,10 @@ static void tegra_sdhci_voltage_switch(struct sdhci_host *host) struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host); const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data; + /* initially this function was called only for the 1.8V case */ + if (host->mmc->ios.signal_voltage != MMC_SIGNAL_VOLTAGE_180) + return; + if (soc_data->nvquirks & NVQUIRK_HAS_PADCALIB) tegra_host->pad_calib_required = true; }
Given its name the voltage_switch() should be called for any voltage. However currently it is only called for the 1.8V case. That means that the current implementation of the callback could have made this assumption. In order to not adding a regression when the voltage_switch() function will be called for the other voltage targets, this patch ensure that the code of the current callback won't be executed for the other case than 1.8V. Cc: Lucas Stach <dev@lynxeye.de> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> --- drivers/mmc/host/sdhci-tegra.c | 4 ++++ 1 file changed, 4 insertions(+)