| Message ID | 1552513552-23423-1-git-send-email-skomatineni@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V3,01/10] mmc: tegra: fix ddr signaling for non-ddr modes | expand |
On Wed, 13 Mar 2019 at 22:45, Sowjanya Komatineni <skomatineni@nvidia.com> wrote: > > ddr_signaling is set to true for DDR50 and DDR52 modes but is > not set back to false for other modes. This programs incorrect > host clock when mode change happens from DDR52/DDR50 to other > SDR or HS modes like incase of mmc_retune where it switches > from HS400 to HS DDR and then from HS DDR to HS mode and then > to HS200. > > This patch fixes the ddr_signaling to set properly for non DDR > modes. > > Tested-by: Jon Hunter <jonathanh@nvidia.com> > Acked-by: Adrian Hunter <adrian.hunter@intel.com> > Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Is this a fix and/or shall I tag it for stable? The series looks good to me, however I am awaiting two more acks from Adrian on patch 2 and patch3. Kind regards Uffe > --- > drivers/mmc/host/sdhci-tegra.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c > index 32e62904c0d3..46086dd43bfb 100644 > --- a/drivers/mmc/host/sdhci-tegra.c > +++ b/drivers/mmc/host/sdhci-tegra.c > @@ -779,6 +779,7 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host, > bool set_dqs_trim = false; > bool do_hs400_dll_cal = false; > > + tegra_host->ddr_signaling = false; > switch (timing) { > case MMC_TIMING_UHS_SDR50: > case MMC_TIMING_UHS_SDR104: > -- > 2.7.4 >
> > > > ddr_signaling is set to true for DDR50 and DDR52 modes but is not set > > back to false for other modes. This programs incorrect host clock when > > mode change happens from DDR52/DDR50 to other SDR or HS modes like > > incase of mmc_retune where it switches from HS400 to HS DDR and then > > from HS DDR to HS mode and then to HS200. > > > > This patch fixes the ddr_signaling to set properly for non DDR modes. > > > > Tested-by: Jon Hunter <jonathanh@nvidia.com> > > Acked-by: Adrian Hunter <adrian.hunter@intel.com> > > Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> > > Is this a fix and/or shall I tag it for stable? > > The series looks good to me, however I am awaiting two more acks from Adrian on patch 2 and patch3. > > Kind regards > Uffe > > Thanks Uffe. Yes this is applicable for stable. > > --- > > drivers/mmc/host/sdhci-tegra.c | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/drivers/mmc/host/sdhci-tegra.c > > b/drivers/mmc/host/sdhci-tegra.c index 32e62904c0d3..46086dd43bfb > > 100644 > > --- a/drivers/mmc/host/sdhci-tegra.c > > +++ b/drivers/mmc/host/sdhci-tegra.c > > @@ -779,6 +779,7 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host, > > bool set_dqs_trim = false; > > bool do_hs400_dll_cal = false; > > > > + tegra_host->ddr_signaling = false; > > switch (timing) { > > case MMC_TIMING_UHS_SDR50: > > case MMC_TIMING_UHS_SDR104: > > -- > > 2.7.4 > >
> > > > ddr_signaling is set to true for DDR50 and DDR52 modes but is not > > set back to false for other modes. This programs incorrect host > > clock when mode change happens from DDR52/DDR50 to other SDR or HS > > modes like incase of mmc_retune where it switches from HS400 to HS > > DDR and then from HS DDR to HS mode and then to HS200. > > > > This patch fixes the ddr_signaling to set properly for non DDR modes. > > > > Tested-by: Jon Hunter <jonathanh@nvidia.com> > > Acked-by: Adrian Hunter <adrian.hunter@intel.com> > > Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> > > Is this a fix and/or shall I tag it for stable? > > The series looks good to me, however I am awaiting two more acks from Adrian on patch 2 and patch3. > > Kind regards > Uffe > > Thanks Uffe. Yes this is applicable for stable. Just sent updated patch series V4 with minor fix for avoiding build error warning. Didn’t see earlier and found missing -Werror flag during build. So fixed in V4. > > --- > > drivers/mmc/host/sdhci-tegra.c | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/drivers/mmc/host/sdhci-tegra.c > > b/drivers/mmc/host/sdhci-tegra.c index 32e62904c0d3..46086dd43bfb > > 100644 > > --- a/drivers/mmc/host/sdhci-tegra.c > > +++ b/drivers/mmc/host/sdhci-tegra.c > > @@ -779,6 +779,7 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host, > > bool set_dqs_trim = false; > > bool do_hs400_dll_cal = false; > > > > + tegra_host->ddr_signaling = false; > > switch (timing) { > > case MMC_TIMING_UHS_SDR50: > > case MMC_TIMING_UHS_SDR104: > > -- > > 2.7.4 > >
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 32e62904c0d3..46086dd43bfb 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -779,6 +779,7 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host, bool set_dqs_trim = false; bool do_hs400_dll_cal = false; + tegra_host->ddr_signaling = false; switch (timing) { case MMC_TIMING_UHS_SDR50: case MMC_TIMING_UHS_SDR104: