Add suspend frequency support and set it to the boot frequency,
this matches what the old exynos-cpufreq driver has been doing.
This patch fixes suspend/resume support on Exynos4412 based
Trats2 board and reboot hang on Exynos4412 based Odroid U3
board.
Cc: Viresh Kumar <viresh.ku...@linaro.org>
Cc: Thomas Abraham <thomas...@samsung.com>
Cc: Javier Martinez Canillas <jav...@osg.samsung.com>
Cc: Krzysztof Kozlowski <k.kozlow...@samsung.com>
Cc: Marek Szyprowski <m.szyprow...@samsung.com>
Cc: Tobias Jakobi <tjak...@math.uni-bielefeld.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnier...@samsung.com>
---
This patch supersedes "[PATCH] ARM: dts: exynos4412-odroid-*: add
workaround for CPUfreq/reboot issue" one from yesterday.
drivers/cpufreq/cpufreq-dt.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index c3583cd..c9138c7 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -329,6 +329,10 @@ static int cpufreq_init(struct cpufreq_policy *policy)
policy->driver_data = priv;
policy->clk = cpu_clk;
+
+ /* capture boot frequency */
+ policy->suspend_freq = clk_get_rate(cpu_clk) / 1000;;
+
ret = cpufreq_table_validate_and_show(policy, freq_table);
if (ret) {
dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__,
@@ -419,6 +423,9 @@ static struct cpufreq_driver dt_cpufreq_driver = {
.ready = cpufreq_ready,
.name = "cpufreq-dt",
.attr = cpufreq_dt_attr,
+#ifdef CONFIG_PM
+ .suspend = cpufreq_generic_suspend,
+#endif
};
static int dt_cpufreq_probe(struct platform_device *pdev)
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
