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* soc: rockchip: power-domain: don't try to print the clock name in error caseHeiko Stuebner2015-10-161-2/+2
| | | | | | | | | When we never got the the clock-reference, i.e. when IS_ERR(clk) is true, don't try to print the clock name via %pC as this of course produces a null-pointer-dereference in __clk_get_name(). Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Caesar Wang <wxt@rock-chips.com>
* soc: rockchip: Restrict to ARCH_ROCKCHIPThierry Reding2015-10-111-0/+4
| | | | | | | | | | | | | By definition this directory contains drivers that are specific to the Rockchip architecture. All Kconfig options should therefore depend on ARCH_ROCKCHIP to avoid exposing these symbols on other architectures. For example, this options currently shows up as new when doing an incremental build on PowerPC. Signed-off-by: Thierry Reding <treding@nvidia.com> [add COMPILE_TEST alternative condition] Signed-off-by: Heiko Stuebner <heiko@sntech.de>
* soc: rockchip: power-domain: Add power domain driverCaesar Wang2015-10-063-0/+508
This driver is found on RK3288 SoCs. In order to meet high performance and low power requirements, a power management unit is designed or saving power when RK3288 in low power mode. The RK3288 PMU is dedicated for managing the power of the whole chip. PMU can work in the Low Power Mode by setting bit[0] of PMU_PWRMODE_CON register. After setting the register, PMU would enter the Low Power mode. In the low power mode, pmu will auto power on/off the specified power domain, send idle req to specified power domain, shut down/up pll and so on. All of above are configurable by setting corresponding registers. Signed-off-by: Caesar Wang <wxt@rock-chips.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> [replace dsb() with dsb(sy) for arm64 buildability; sy is the default, so no functional change; adapt to per-user clocks in genpd] Signed-off-by: Heiko Stuebner <heiko@sntech.de>