Hi Thomas, Thomas Abraham <thomas.ab@xxxxxxxxxxx> writes: > Changes since v11: > - Rebased on top of git://linuxtv.org/snawrocki/samsung.git for-v3.19-exynos-clk Thanks for rebasing/reposting. > This patch series removes the use of Exynos4210 and Exynos5250 specific cpufreq > drivers and enables the use of cpufreq-dt driver for these platforms. This > series also enables cpufreq support for Exynos5420 using arm_big_little cpufreq > driver. > > This series is based on the following branch. > git://linuxtv.org/snawrocki/samsung.git for-v3.19-exynos-clk > > This series depends on the following patch which can be picked from > git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git samsung/dt > e540920cf21c (ARM: dts: add CPU nodes for Exynos4 SoCs). > > This patch series has been tested on Exynos4210/5250/5420 based boards. > Tomasz Figa had plans to take this in the Samsung clock tree for v3.19 > (http://www.spinics.net/lists/linux-samsung-soc/msg37933.html). > Sylwester, could you consider to merge this in your tree? I tested this on exynos5800-peach-pi, and noticed a few things. First, since voltage scaling is not currently supported, the CPU cluster regulators (vdd_arm, and vdd_kfc) have to be set at sufficietnly high voltage to support all the OPPs, otherwise things will likely hang. I think you should include something like the patch below[1] in this series as well. Second, as with earlier versions of this series, I'm still seeing lots of "wait_until_divider_stable: timeout in divider stablization" messages coming out when running powertop. Speaking of powertop, in the "frequency stats" tab, I'm not seeing 0% time spent in all the P-states, so not sure what's going on there. The stats/time_in_state sysfs files under cpufreq seem to show the right values, so I'm not sure what's going on with powertop there. Kevin [1] diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts index e8fdda827fc9..5160735aad3b 100644 --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts @@ -195,8 +195,8 @@ buck2_reg: BUCK2 { regulator-name = "vdd_arm"; - regulator-min-microvolt = <800000>; - regulator-max-microvolt = <1500000>; + regulator-min-microvolt = <1250000>; + regulator-max-microvolt = <1250000>; regulator-always-on; regulator-boot-on; regulator-ramp-delay = <12500>; @@ -230,8 +230,8 @@ buck6_reg: BUCK6 { regulator-name = "vdd_kfc"; - regulator-min-microvolt = <800000>; - regulator-max-microvolt = <1500000>; + regulator-min-microvolt = <1275000>; + regulator-max-microvolt = <1275000>; regulator-always-on; regulator-boot-on; regulator-ramp-delay = <12500>; > Thomas Abraham (6): > clk: samsung: add infrastructure to register cpu clocks > clk: samsung: add cpu clock configuration data and instantiate cpu clock > ARM: dts: Exynos: add CPU OPP and regulator supply property > ARM: Exynos: switch to using generic cpufreq driver for Exynos4210/5250/5420 > cpufreq: exynos: remove exynos4210/5250 specific cpufreq driver support > clk: samsung: remove unused clock aliases and update clock flags > > arch/arm/boot/dts/exynos4210-origen.dts | 4 + > arch/arm/boot/dts/exynos4210-trats.dts | 4 + > arch/arm/boot/dts/exynos4210-universal_c210.dts | 4 + > arch/arm/boot/dts/exynos4210.dtsi | 14 ++- > arch/arm/boot/dts/exynos5250-arndale.dts | 4 + > arch/arm/boot/dts/exynos5250-smdk5250.dts | 4 + > arch/arm/boot/dts/exynos5250-snow.dts | 4 + > arch/arm/boot/dts/exynos5250.dtsi | 25 +++- > arch/arm/boot/dts/exynos5420.dtsi | 38 ++++ > arch/arm/mach-exynos/exynos.c | 26 +++- > drivers/clk/samsung/Makefile | 2 +- > drivers/clk/samsung/clk-exynos4.c | 63 +++++--- > drivers/clk/samsung/clk-exynos5250.c | 44 ++++- > drivers/clk/samsung/clk-exynos5420.c | 72 +++++++- > drivers/cpufreq/Kconfig.arm | 22 --- > drivers/cpufreq/Makefile | 2 - > drivers/cpufreq/exynos4210-cpufreq.c | 184 -------------------- > drivers/cpufreq/exynos5250-cpufreq.c | 210 ----------------------- > include/dt-bindings/clock/exynos5250.h | 1 + > include/dt-bindings/clock/exynos5420.h | 2 + > 20 files changed, 266 insertions(+), 463 deletions(-) > delete mode 100644 drivers/cpufreq/exynos4210-cpufreq.c > delete mode 100644 drivers/cpufreq/exynos5250-cpufreq.c > > -- > 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
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