| Message ID | 1474874730-12802-1-git-send-email-zhangqing@rock-chips.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, On Mon, Sep 26, 2016 at 12:25 AM, Elaine Zhang <zhangqing@rock-chips.com> wrote: > According to the advice of the IC, > setting the PMU_GPU_PWRDW/PWRUP_CNT regs 6 cycel(250ns) for RK3399 SOC. > > Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> > --- > drivers/soc/rockchip/pm_domains.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) This has problems on several levels. Please see <https://patchwork.kernel.org/patch/9288607/> for some context. Note that ATF changes have landed, so my patch could probably land at any time. > diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c > index 7acd1517dd37..247dd6f6994a 100644 > --- a/drivers/soc/rockchip/pm_domains.c > +++ b/drivers/soc/rockchip/pm_domains.c > @@ -722,11 +722,11 @@ static const struct rockchip_pmu_info rk3399_pmu = { > .idle_offset = 0x64, > .ack_offset = 0x68, > > - .core_pwrcnt_offset = 0x9c, > - .gpu_pwrcnt_offset = 0xa4, > + .core_pwrcnt_offset = 0xac, > + .gpu_pwrcnt_offset = 0xac, One specific thing that's wrong is that you're setting both the GPU and the Core to the same register address, which is wrong. You're changing them from 0x9c (little) and 0xa4 (big) to 0xac (gpu) and 0xac (gpu, again) A second specific thing that is wrong is that there are 3 relevant sets of counts in this CPU: big, little, and cpu. This code only handles two. As per <https://patchwork.kernel.org/patch/9288607/>, rather than fixing this code I think this belongs in ATF to manage. > - .core_power_transition_time = 24, > - .gpu_power_transition_time = 24, > + .core_power_transition_time = 6, /* 0.25us */ > + .gpu_power_transition_time = 6, /* 0.25us */ If these transition times are actually good, please work with Caesar to get a patch to ATF. Please double-check with Xing Zheng to make sure that suspend/resume isn't affected. -Doug
Am Montag, 26. September 2016, 08:17:54 CEST schrieb Doug Anderson: > Hi, > > On Mon, Sep 26, 2016 at 12:25 AM, Elaine Zhang <zhangqing@rock-chips.com> wrote: > > According to the advice of the IC, > > setting the PMU_GPU_PWRDW/PWRUP_CNT regs 6 cycel(250ns) for RK3399 SOC. > > > > Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> > > --- > > > > drivers/soc/rockchip/pm_domains.c | 8 ++++---- > > 1 file changed, 4 insertions(+), 4 deletions(-) > > This has problems on several levels. Please see > <https://patchwork.kernel.org/patch/9288607/> for some context. > > Note that ATF changes have landed, so my patch could probably land at any > time. thanks for the heads up. As before I still agree with you that this is better done in the ATF, so I guess I can merge your other patch for 4.10 now. Heiko
diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c index 7acd1517dd37..247dd6f6994a 100644 --- a/drivers/soc/rockchip/pm_domains.c +++ b/drivers/soc/rockchip/pm_domains.c @@ -722,11 +722,11 @@ static const struct rockchip_pmu_info rk3399_pmu = { .idle_offset = 0x64, .ack_offset = 0x68, - .core_pwrcnt_offset = 0x9c, - .gpu_pwrcnt_offset = 0xa4, + .core_pwrcnt_offset = 0xac, + .gpu_pwrcnt_offset = 0xac, - .core_power_transition_time = 24, - .gpu_power_transition_time = 24, + .core_power_transition_time = 6, /* 0.25us */ + .gpu_power_transition_time = 6, /* 0.25us */ .num_domains = ARRAY_SIZE(rk3399_pm_domains), .domain_info = rk3399_pm_domains,
According to the advice of the IC, setting the PMU_GPU_PWRDW/PWRUP_CNT regs 6 cycel(250ns) for RK3399 SOC. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> --- drivers/soc/rockchip/pm_domains.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)