| Message ID | 1456739480-3304-1-git-send-email-wni@nvidia.com |
|---|---|
| State | Accepted, archived |
| Headers | show |
Hi, Rui & Thierry & Matt Could you please take a look on this patch. It's a bug on the temperature's sign bit, it can't show the negative temperature, although it will not cause problems for now. Thanks. Wei. On 2016年02月29日 17:51, Wei Ni wrote: > The sign bit of temperature readback is bit 0, not bit 1. > Change to BIT(0) to fix it. > > Signed-off-by: Wei Ni <wni@nvidia.com> > --- > drivers/thermal/tegra_soctherm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c > index 74ea5765938b..136975220c92 100644 > --- a/drivers/thermal/tegra_soctherm.c > +++ b/drivers/thermal/tegra_soctherm.c > @@ -57,7 +57,7 @@ > #define READBACK_VALUE_MASK 0xff00 > #define READBACK_VALUE_SHIFT 8 > #define READBACK_ADD_HALF BIT(7) > -#define READBACK_NEGATE BIT(1) > +#define READBACK_NEGATE BIT(0) > > #define FUSE_TSENSOR8_CALIB 0x180 > #define FUSE_SPARE_REALIGNMENT_REG_0 0x1fc > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 03/01/2016 11:40 PM, Wei Ni wrote: > >diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c > >index 74ea5765938b..136975220c92 100644 > >--- a/drivers/thermal/tegra_soctherm.c > >+++ b/drivers/thermal/tegra_soctherm.c > >@@ -57,7 +57,7 @@ > > #define READBACK_VALUE_MASK 0xff00 > > #define READBACK_VALUE_SHIFT 8 > > #define READBACK_ADD_HALF BIT(7) > >-#define READBACK_NEGATE BIT(1) > >+#define READBACK_NEGATE BIT(0) I confirm that this change is technically correct. It fixes a bug. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, Rui and Thierry Could you please take a look at this patch? Thanks. Wei. On 2016年03月03日 08:08, Matt Longnecker wrote: > > > On 03/01/2016 11:40 PM, Wei Ni wrote: >> >diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c >> >index 74ea5765938b..136975220c92 100644 >> >--- a/drivers/thermal/tegra_soctherm.c >> >+++ b/drivers/thermal/tegra_soctherm.c >> >@@ -57,7 +57,7 @@ >> > #define READBACK_VALUE_MASK 0xff00 >> > #define READBACK_VALUE_SHIFT 8 >> > #define READBACK_ADD_HALF BIT(7) >> >-#define READBACK_NEGATE BIT(1) >> >+#define READBACK_NEGATE BIT(0) > I confirm that this change is technically correct. It fixes a bug. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Mar 02, 2016 at 04:08:33PM -0800, Matt Longnecker wrote: > > > On 03/01/2016 11:40 PM, Wei Ni wrote: > >>diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c > >>index 74ea5765938b..136975220c92 100644 > >>--- a/drivers/thermal/tegra_soctherm.c > >>+++ b/drivers/thermal/tegra_soctherm.c > >>@@ -57,7 +57,7 @@ > >> #define READBACK_VALUE_MASK 0xff00 > >> #define READBACK_VALUE_SHIFT 8 > >> #define READBACK_ADD_HALF BIT(7) > >>-#define READBACK_NEGATE BIT(1) > >>+#define READBACK_NEGATE BIT(0) > I confirm that this change is technically correct. It fixes a bug. That usually translates to a Reviewed-by: tag. =) Thierry
On Mon, Feb 29, 2016 at 05:51:20PM +0800, Wei Ni wrote: > The sign bit of temperature readback is bit 0, not bit 1. > Change to BIT(0) to fix it. > > Signed-off-by: Wei Ni <wni@nvidia.com> > --- > drivers/thermal/tegra_soctherm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c > index 74ea5765938b..136975220c92 100644 > --- a/drivers/thermal/tegra_soctherm.c > +++ b/drivers/thermal/tegra_soctherm.c > @@ -57,7 +57,7 @@ > #define READBACK_VALUE_MASK 0xff00 > #define READBACK_VALUE_SHIFT 8 > #define READBACK_ADD_HALF BIT(7) > -#define READBACK_NEGATE BIT(1) > +#define READBACK_NEGATE BIT(0) I haven't found this documented anywhere. The register documentation indicates that the SOC_THERM_TSENSOR_TEMP1 and SOC_THERM_TSENSOR_TEMP2 registers are in some kind of "temp readback format", but I can't find any specification of that format. Can you point me at the source for this information and file an internal bug report so that we can get the documentation updated? Thierry
On 2016年03月07日 16:38, Thierry Reding wrote: > * PGP Signed by an unknown key > > On Mon, Feb 29, 2016 at 05:51:20PM +0800, Wei Ni wrote: >> The sign bit of temperature readback is bit 0, not bit 1. >> Change to BIT(0) to fix it. >> >> Signed-off-by: Wei Ni <wni@nvidia.com> >> --- >> drivers/thermal/tegra_soctherm.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c >> index 74ea5765938b..136975220c92 100644 >> --- a/drivers/thermal/tegra_soctherm.c >> +++ b/drivers/thermal/tegra_soctherm.c >> @@ -57,7 +57,7 @@ >> #define READBACK_VALUE_MASK 0xff00 >> #define READBACK_VALUE_SHIFT 8 >> #define READBACK_ADD_HALF BIT(7) >> -#define READBACK_NEGATE BIT(1) >> +#define READBACK_NEGATE BIT(0) > > I haven't found this documented anywhere. The register documentation > indicates that the SOC_THERM_TSENSOR_TEMP1 and SOC_THERM_TSENSOR_TEMP2 > registers are in some kind of "temp readback format", but I can't find > any specification of that format. Can you point me at the source for > this information and file an internal bug report so that we can get > the documentation updated? Sure, I will do it. Thanks for your comment. > > Thierry > > * Unknown Key > * 0x7F3EB3A1 > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 2016年03月07日 16:55, Zhang, Rui wrote: > For the soc thermal driver changes, you'd better cc Eduardo at the same time so that he can include this in his soc-thermal pull request. > Surely I can queue this for 4.6 if Eduardo miss this. Thanks for your help. BTW, please add: Reviewed-by: Matt Longnecker <mlongnecker@nvidia.com> Or I need to send v2 patch to add it? Thanks. Wei. > > Thanks, > rui > >> -----Original Message----- >> From: Wei Ni [mailto:wni@nvidia.com] >> Sent: Monday, March 07, 2016 4:26 PM >> To: thierry.reding@gmail.com; Zhang, Rui <rui.zhang@intel.com>; >> mikko.perttunen@kapsi.fi >> Cc: Matt Longnecker <mlongnecker@nvidia.com>; swarren@wwwdotorg.org; >> linux-tegra@vger.kernel.org; linux-kernel@vger.kernel.org >> Subject: Re: [PATCH] thermal: tegra_soctherm: fix sign bit of temperature >> Importance: High >> >> Hi, Rui and Thierry >> Could you please take a look at this patch? >> >> Thanks. >> Wei. >> >> On 2016年03月03日 08:08, Matt Longnecker wrote: >>> >>> >>> On 03/01/2016 11:40 PM, Wei Ni wrote: >>>>> diff --git a/drivers/thermal/tegra_soctherm.c >> b/drivers/thermal/tegra_soctherm.c >>>>> index 74ea5765938b..136975220c92 100644 >>>>> --- a/drivers/thermal/tegra_soctherm.c >>>>> +++ b/drivers/thermal/tegra_soctherm.c >>>>> @@ -57,7 +57,7 @@ >>>>> #define READBACK_VALUE_MASK 0xff00 >>>>> #define READBACK_VALUE_SHIFT 8 >>>>> #define READBACK_ADD_HALF BIT(7) >>>>> -#define READBACK_NEGATE BIT(1) >>>>> +#define READBACK_NEGATE BIT(0) >>> I confirm that this change is technically correct. It fixes a bug. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c index 74ea5765938b..136975220c92 100644 --- a/drivers/thermal/tegra_soctherm.c +++ b/drivers/thermal/tegra_soctherm.c @@ -57,7 +57,7 @@ #define READBACK_VALUE_MASK 0xff00 #define READBACK_VALUE_SHIFT 8 #define READBACK_ADD_HALF BIT(7) -#define READBACK_NEGATE BIT(1) +#define READBACK_NEGATE BIT(0) #define FUSE_TSENSOR8_CALIB 0x180 #define FUSE_SPARE_REALIGNMENT_REG_0 0x1fc
The sign bit of temperature readback is bit 0, not bit 1. Change to BIT(0) to fix it. Signed-off-by: Wei Ni <wni@nvidia.com> --- drivers/thermal/tegra_soctherm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)