| Message ID | 1565308020-31952-19-git-send-email-skomatineni@nvidia.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | SC7 entry and exit support for Tegra210 | expand |
09.08.2019 2:46, Sowjanya Komatineni пишет: > This patch configures polarity of the core power request signal > in PMC control register based on the device tree property. > > PMC asserts and de-asserts power request signal based on it polarity > when it need to power-up and power-down the core rail during SC7. > > Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> > --- > drivers/soc/tegra/pmc.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c > index 3aa71c28a10a..e013ada7e4e9 100644 > --- a/drivers/soc/tegra/pmc.c > +++ b/drivers/soc/tegra/pmc.c > @@ -56,6 +56,7 @@ > #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */ > #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */ > #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */ > +#define PMC_CNTRL_PWRREQ_POLARITY BIT(8) > #define PMC_CNTRL_MAIN_RST BIT(4) > > #define PMC_WAKE_MASK 0x0c > @@ -2290,6 +2291,11 @@ static void tegra20_pmc_init(struct tegra_pmc *pmc) > else > value |= PMC_CNTRL_SYSCLK_POLARITY; > > + if (pmc->corereq_high) > + value &= ~PMC_CNTRL_PWRREQ_POLARITY; > + else > + value |= PMC_CNTRL_PWRREQ_POLARITY; > + > /* configure the output polarity while the request is tristated */ > tegra_pmc_writel(pmc, value, PMC_CNTRL); > > Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 3aa71c28a10a..e013ada7e4e9 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -56,6 +56,7 @@ #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */ #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */ #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */ +#define PMC_CNTRL_PWRREQ_POLARITY BIT(8) #define PMC_CNTRL_MAIN_RST BIT(4) #define PMC_WAKE_MASK 0x0c @@ -2290,6 +2291,11 @@ static void tegra20_pmc_init(struct tegra_pmc *pmc) else value |= PMC_CNTRL_SYSCLK_POLARITY; + if (pmc->corereq_high) + value &= ~PMC_CNTRL_PWRREQ_POLARITY; + else + value |= PMC_CNTRL_PWRREQ_POLARITY; + /* configure the output polarity while the request is tristated */ tegra_pmc_writel(pmc, value, PMC_CNTRL);
This patch configures polarity of the core power request signal in PMC control register based on the device tree property. PMC asserts and de-asserts power request signal based on it polarity when it need to power-up and power-down the core rail during SC7. Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> --- drivers/soc/tegra/pmc.c | 6 ++++++ 1 file changed, 6 insertions(+)