Hello, This series moves intermediate-clk handling from tegra20-cpufreq into tegra-clk driver, this allows us to switch to generic cpufreq-dt driver which brings voltage scaling, per-hardware OPPs and Tegra30 support out of the box. All boards need to adopt CPU OPPs in their device-trees in order to get cpufreq support. This series adds OPPs only to selective boards because there is assumption in a current device-trees that CPU voltage is set for 1GHz freq and this won't work for those CPUs that can go over 1GHz and thus require voltage regulators to be set up for voltage scaling support (CC'ed Marcel for Toradex boards). We could probably add delete-node for OPPs over 1GHz if there are not actively maintained boards. NOTE(!): the voltage scaling functionality depends on a reviewed and yet unapplied series [0], thus [0] needs to be applied first. [0] https://lkml.org/lkml/2019/7/25/892 Changelog: v2: - Kept modularity of the tegra20-cpufreq as was requested by Viresh Kumar in a review comment to v1. - Added acks from Viresh Kumar. - Added tested-by from Nicolas Chauvet to the "trimslice" patch. Nicolas told me on IRC that it works fine. - Fixed compilation of the "Add custom CCLK implementation" patch. The error happened because v1 was based on top of yet unreviewed/unapplied patch "clk: tegra: divider: Support enable-bit for Super clocks". Thanks to Peter Geis for reporting the problem. - Replaced Tegra30 "beaver" board with "cardhu-a04" because turned out that's what NVIDIA uses in the testing farm. Dmitry Osipenko (17): clk: tegra: Add custom CCLK implementation clk: tegra: pll: Add pre/post rate-change hooks clk: tegra: cclk: Add helpers for handling PLLX rate changes clk: tegra20: Support custom CCLK implementation clk: tegra30: Support custom CCLK implementation dt-bindings: cpufreq: Add binding for NVIDIA Tegra20/30 cpufreq: tegra20: Use generic cpufreq-dt driver (Tegra30 supported now) ARM: tegra: Create tegra20-cpufreq platform device on Tegra30 ARM: dts: tegra20: Add CPU clock ARM: dts: tegra30: Add CPU clock ARM: dts: tegra20: Add CPU Operating Performance Points ARM: dts: tegra30: Add CPU Operating Performance Points ARM: dts: tegra20: paz00: Set up voltage regulators for DVFS ARM: dts: tegra20: paz00: Add CPU Operating Performance Points ARM: dts: tegra20: trimslice: Add CPU Operating Performance Points ARM: dts: tegra30: cardhu-a04: Set up voltage regulators for DVFS ARM: dts: tegra30: cardhu-a04: Add CPU Operating Performance Points .../cpufreq/nvidia,tegra20-cpufreq.txt | 56 + .../boot/dts/tegra20-cpu-opp-microvolt.dtsi | 201 +++ arch/arm/boot/dts/tegra20-cpu-opp.dtsi | 302 +++++ arch/arm/boot/dts/tegra20-paz00.dts | 41 +- arch/arm/boot/dts/tegra20-trimslice.dts | 11 + arch/arm/boot/dts/tegra20.dtsi | 2 + arch/arm/boot/dts/tegra30-cardhu-a04.dts | 48 + .../boot/dts/tegra30-cpu-opp-microvolt.dtsi | 801 +++++++++++ arch/arm/boot/dts/tegra30-cpu-opp.dtsi | 1202 +++++++++++++++++ arch/arm/boot/dts/tegra30.dtsi | 4 + arch/arm/mach-tegra/tegra.c | 4 + drivers/clk/tegra/Makefile | 1 + drivers/clk/tegra/clk-pll.c | 12 +- drivers/clk/tegra/clk-tegra-super-cclk.c | 164 +++ drivers/clk/tegra/clk-tegra20.c | 6 +- drivers/clk/tegra/clk-tegra30.c | 6 +- drivers/clk/tegra/clk.h | 12 + drivers/cpufreq/Kconfig.arm | 6 +- drivers/cpufreq/cpufreq-dt-platdev.c | 2 + drivers/cpufreq/tegra20-cpufreq.c | 211 +-- 20 files changed, 2916 insertions(+), 176 deletions(-) create mode 100644 Documentation/devicetree/bindings/cpufreq/nvidia,tegra20-cpufreq.txt create mode 100644 arch/arm/boot/dts/tegra20-cpu-opp-microvolt.dtsi create mode 100644 arch/arm/boot/dts/tegra20-cpu-opp.dtsi create mode 100644 arch/arm/boot/dts/tegra30-cpu-opp-microvolt.dtsi create mode 100644 arch/arm/boot/dts/tegra30-cpu-opp.dtsi create mode 100644 drivers/clk/tegra/clk-tegra-super-cclk.c -- 2.23.0
