Mr. Dae, Thanks for your valuable inputs. I posted it as RFC because, I also have received comments to register hdmiphy as a clock controller. As we always configure it for specific frequency, hdmi-phy looks similar to a PLL. But it really doesn't belong to that class. Secondly prior to exynos5420, it was a i2c device. I am not sure we can register a I2C device as a clock controller. I wanted to discuss and explore this option here. As you said, in parallel, I will align these changes and along with "drm/exynos: hdmi: move hdmiphy related code to hdmiphy driver" series and post them. I hope we should be able to close on one of the above approaches for hdmiphy. regards, Rahul Sharma. On Wed, Jun 12, 2013 at 9:57 AM, Inki Dae <inki.dae@xxxxxxxxxxx> wrote: > > > > 2013/6/12 Inki Dae <inki.dae@xxxxxxxxxxx> >> >> Hi Rahul, >> >> This patch is important to us. Actually, previous hdmi driver had >> controlled hdmiphy HDMI_PHY_CONTROL as if that were a clock but now that >> doesn't exist anymore. So we need to discuss how hdmiphy should be handled. >> I konw that you had already posted hdmiphy relevant patch set, [PATCH 0/4] >> drm/exynos: hdmi: move hdmiphy related code to hdmiphy driver. >> >> I think we can couple pmu register controlling codes with that patch set >> without RFC. Could you update and post them again? like below, >> [PATCH 0/4] drm/exynos: hdmi: move hdmiphy related code to hdmiphy driver >> + [RFC 0/2] exynos5250/hdmi: replace dummy hdmiphy clock with pmu reg >> control >> >> And then let's start review :) > > > And I think It would be better to move the pmu register controlling codes > into hdmiphy driver like drivers/usb/phy/phy-samsung-usb2.c driver does. > >> >> >> Thanks, >> Inki Dae >> >> >> >> 2013/6/11 Rahul Sharma <rahul.sharma@xxxxxxxxxxx> >>> >>> Previously, hdmiphy is added as a dummy clock in clock file for >>> exynos SoCs. Enable/Disable to this clock, actually toggles the power >>> control bit in PMU, instead of controlling the clock gate. >>> >>> This RFC adds the support to parse hdmiphy control node which is a child >>> node to hdmi, and map the pmu register to toggle the power control bit. >>> >>> This is based on drm-next branch in Inki Dae's tree. >>> >>> Rahul Sharma (2): >>> drm/exynos: replace dummy hdmiphy clock with pmu register control >>> ARM/dts: add hdmiphy power control pmu register to hdmi dt node >>> >>> arch/arm/boot/dts/exynos5250.dtsi | 6 +++ >>> drivers/gpu/drm/exynos/exynos_hdmi.c | 69 >>> ++++++++++++++++++++++++++++++---- >>> drivers/gpu/drm/exynos/regs-hdmi.h | 4 ++ >>> 3 files changed, 71 insertions(+), 8 deletions(-) >>> >>> -- >>> 1.7.10.4 >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe >>> linux-samsung-soc" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
 |