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path: root/arch/arm/mach-imx/cpuidle-imx6sx.c
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2016-08-29ARM: imx: add cpuidle support for i.mx6ulAnson Huang
This patch enables cpuidle driver for i.MX6UL, it reuses i.MX6SX's cpuidle driver, 3 levels of cpuidle supported: 1. ARM WFI; 2. SOC in WAIT mode; 3. SOC in WAIT mode + ARM power off. As i.MX6UL has cortex-A7 CORE with an internal L2 cache, so flushing it before powering down ARM platform is necessary, flush_cache_all() in last step of cpu_suspend has very small overhead, just call it to avoid cache type check for different platforms. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-08-29ARM: imx: enable WAIT mode hardware workaround for imx6sxAnson Huang
Need to enable INT_MEM_CLK_LPM bit in CCM_CGPR for WAIT mode, without this bit set, if there is pending interrupt during ARM platform entering WAIT mode without power gating, cache data will be corrupted, this is a hardware workaround for WAIT mode and must be enabled. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-06-03ARM: imx6: set initial power mode in pm functionShawn Guo
Rather than setting initial low-power mode in every single i.MX6 clock initialization function, we should really do that in pm code. Let's move imx6q_set_lpm(WAIT_CLOCKED) call into imx6_pm_common_init(). While at it, let's rename the function to imx6_set_lpm() since it's actually common for all i.MX6 SoCs. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2015-03-23ARM: cpuidle: Remove duplicate header inclusionDaniel Lezcano
The cpu_do_idle() function is always used by the cpuidle drivers. That led to have each driver including cpuidle.h and proc-fns.h, they are always paired. That makes a lot of duplicate headers inclusion. Instead of including both in each .c file, move the proc-fns.h header inclusion in the cpuidle.h header file directly, so we can save some line of code. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-01-06ARM: imx: drop CPUIDLE_FLAG_TIME_VALID from cpuidle-imx6sxShawn Guo
As the result of commit b82b6cca4880 ("cpuidle: Invert CPUIDLE_FLAG_TIME_VALID logic"), the flag gets removed and hence we see the compile error below. CC arch/arm/mach-imx/cpuidle-imx6sx.o arch/arm/mach-imx/cpuidle-imx6sx.c:69:13: error: ‘CPUIDLE_FLAG_TIME_VALID’ undeclared here (not in a function) Since the behavior of the original flag has been the default, we can simply drop the flag now. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2015-01-05ARM: imx: support arm power off in cpuidle for i.mx6sxAnson Huang
This patch introduces an independent cpuidle driver for i.MX6SX, and supports arm power off in idle, totally 3 levels of cpuidle are supported as below: 1. ARM WFI; 2. SOC in WAIT mode; 3. SOC in WAIT mode + ARM power off. ARM power off can save at least 5mW power. This patch also replaces imx6q_enable_rbc with imx6_enable_rbc. Signed-off-by: Anson Huang <b20788@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>