Hi Tony, The following series configures the initial frequencies for the required DPLLs and corresponding output divider clocks used by various remoteproc accelerators (DSP, IVAHD) on OMAP4, OMAP5 & DRA7xx/AM57xx SoCs and the GPU on DRA7xx/AM57xx SoCs. All these devices require Adaptive Voltage Scaling (AVS) to be programmed at all OPPs at boot time, which is programmed in the bootloader. Furthermore, DVFS is not supported on these domains implying a one-time OPP clock frequency setup. IPUs (except for IPU1 on DRA7) being in CORE domain, are clocked by the CORE DPLL and do not require any specific programming. The DPLLs clock rates are configured for OPP_NOM rates which is what the bootloader configures the corresponding voltage domains for by default. The design follows the assigned-clock parents/rates rules for clock providers in the generic clock bindings. Newer U-boots of 2017.01 and later can also add/update these properties if a different OPP is required. The default is OPP_NOM, and higher OPPs can be supported through configuration of the bootloader. This series sets up the DPLLs for OPP_NOM and be agnostic of the bootloaders w.r.t the clock frequences (like when using older U-Boots). MPU domain is not affected as it supports DVFS and different OPPs can be supported through the appropriate kernel framework. I have tested the patches using 4.12-rc4, but they can be applied on the 4.12-rc1 base just fine. regards Suman Subhajit Paul (1): ARM: dts: dra7xx-clocks: Use DPLL_GPU for GPU clocks Suman Anna (5): ARM: dts: omap44xx-clocks: Set IVA DPLL and its output clock rates ARM: dts: omap54xx-clocks: Set IVA DPLL and its output clock rates ARM: dts: dra7xx-clocks: Source IPU1 functional clock from CORE DPLL ARM: dts: dra7xx-clocks: Set DSP DPLL and its output clock rates ARM: dts: dra7xx-clocks: Set IVA DPLL and its output clock rates arch/arm/boot/dts/dra7xx-clocks.dtsi | 20 ++++++++++++++++++++ arch/arm/boot/dts/omap44xx-clocks.dtsi | 6 ++++++ arch/arm/boot/dts/omap54xx-clocks.dtsi | 6 ++++++ 3 files changed, 32 insertions(+) -- 2.12.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
