[PATCH 5/5] ARM: imx53: add cpufreq support
From: l.stach@pengutronix.de (Lucas Stach)
Date: 2014-09-19 16:16:21
Also in:
linux-pm
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Instanciate the platform device for the generic cpufreq-cpu0 driver and add all required properties to the DT. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> --- arch/arm/boot/dts/imx53.dtsi | 13 ++++++++++++- arch/arm/mach-imx/mach-imx53.c | 4 ++++ 2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi
index 64fa27b36be0..bd5226a7ea20 100644
--- a/arch/arm/boot/dts/imx53.dtsi
+++ b/arch/arm/boot/dts/imx53.dtsi@@ -46,10 +46,21 @@ cpus { #address-cells = <1>; #size-cells = <0>; - cpu at 0 { + cpu0: cpu at 0 { device_type = "cpu"; compatible = "arm,cortex-a8"; reg = <0x0>; + clocks = <&clks IMX5_CLK_ARM>; + clock-latency = <61036>; + voltage-tolerance = <5>; + operating-points = < + /* kHz */ + 166666 850000 + 400000 900000 + 800000 1050000 + 1000000 1200000 + 1200000 1300000 + >; }; };
diff --git a/arch/arm/mach-imx/mach-imx53.c b/arch/arm/mach-imx/mach-imx53.c
index 03dd6ea13acc..4eb6849c52d2 100644
--- a/arch/arm/mach-imx/mach-imx53.c
+++ b/arch/arm/mach-imx/mach-imx53.c@@ -38,9 +38,13 @@ static void __init imx53_dt_init(void) imx_aips_allow_unprivileged_access("fsl,imx53-aipstz"); } +static struct platform_device imx53_cpufreq_pdev = { .name = "cpufreq-cpu0", }; + static void __init imx53_init_late(void) { imx53_pm_init(); + + platform_device_register(&imx53_cpufreq_pdev); } static const char * const imx53_dt_board_compat[] __initconst = {
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2.1.0