[PATCH] cpufreq: mt8173: Add support for MT8176 and MT817x compatibles
Daniel Kurtz
djkurtz at chromium.org
Thu Mar 2 02:36:26 PST 2017
The Mediatek MT8173 is just on of several SOCs from the same MT817x family,
including the 6-core (4-little/2-big) MT8176.
The mt8173-cpufreq driver supports all of these SOCs, however, machines
using them may use a different machine compatible.
Since this driver checks explicitly for the machine compatible string, add
support for the whole family.
Signed-off-by: Daniel Kurtz <djkurtz at chromium.org>
---
This patch is based on the compatibles added by the MT8176 series:
https://patchwork.kernel.org/patch/9573209/
https://patchwork.kernel.org/patch/9573213/
drivers/cpufreq/mt8173-cpufreq.c | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
index ab25b1235a5e..07f7aac56f31 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mt8173-cpufreq.c
@@ -573,13 +573,34 @@ static struct platform_driver mt8173_cpufreq_platdrv = {
.probe = mt8173_cpufreq_probe,
};
+/* List of machine compatible strings supported by this driver */
+static const char *mt8173_cpufreq_machines[] = {
+ "mediatek,mt817x",
+ "mediatek,mt8173",
+ "mediatek,mt8176",
+};
+
+static int mt8173_cpufreq_is_compatible(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mt8173_cpufreq_machines); i++)
+ if (of_machine_is_compatible(mt8173_cpufreq_machines[i]))
+ return 0;
+
+ return -ENODEV;
+}
+
static int mt8173_cpufreq_driver_init(void)
{
struct platform_device *pdev;
int err;
- if (!of_machine_is_compatible("mediatek,mt8173"))
- return -ENODEV;
+ err = mt8173_cpufreq_is_compatible();
+ if (err) {
+ pr_err("Machine is not compatible with 'mediatek,mt8173'\n");
+ return err;
+ }
err = platform_driver_register(&mt8173_cpufreq_platdrv);
if (err)
--
2.12.0.rc1.440.g5b76565f74-goog
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