diff options
| author | Anson Huang <b20788@freescale.com> | 2014-06-11 16:42:01 +0800 |
|---|---|---|
| committer | Anson Huang <b20788@freescale.com> | 2014-06-11 16:50:40 +0800 |
| commit | 8d5b4cfe4f781216606e13d23b7e2ccd8de586cc (patch) | |
| tree | abbc2622bde1289a850c0083fec03b59df72459b /arch/arm/mach-imx | |
| parent | 88d63044be671990666a712626d57bbb882a8eb5 (diff) | |
ENGR00317861 ARM: imx: add cpufreq support when VPU running at 352MHz
When VPU 352MHz is supported, PLL2_PFD2 will run at 352MHz instead of
396MHz, CPUFreq driver will use PLL2_PFD2 when it is running at 396MHz
setpoint, so when VPU 352MHz is enabled, CPUFreq can be enabled but
need to remove the 396MHz setpoint.
Signed-off-by: Anson Huang <b20788@freescale.com>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 9a8fd6f01c62..4808ebbff9ac 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -391,6 +391,12 @@ static void __init imx6q_opp_check_speed_grading(struct device *cpu_dev) pr_warn("failed to disable 850 MHz OPP\n"); } + if (IS_ENABLED(CONFIG_MX6_VPU_352M)) { + if (opp_disable(cpu_dev, 396000000)) + pr_warn("failed to disable 396MHz OPP\n"); + pr_info("remove 396MHz OPP for VPU running at 352MHz!\n"); + } + put_node: of_node_put(np); } @@ -466,8 +472,7 @@ static void __init imx6q_init_late(void) IMX_CHIP_REVISION_1_0)) imx6q_cpuidle_init(); - if (IS_ENABLED(CONFIG_ARM_IMX6_CPUFREQ) && - !IS_ENABLED(CONFIG_MX6_VPU_352M)) { + if (IS_ENABLED(CONFIG_ARM_IMX6_CPUFREQ)) { imx6q_opp_init(&imx6q_cpufreq_pdev.dev); platform_device_register(&imx6q_cpufreq_pdev); } |