| Message ID | 20170302110345.184924-2-djkurtz@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 02-03-17, 19:03, Daniel Kurtz wrote: > The Mediatek MT8173 is just one 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@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/ > > v2: > - use of_match_node (Thanks, Viresh!) > > drivers/cpufreq/mt8173-cpufreq.c | 21 ++++++++++++++++++++- > 1 file changed, 20 insertions(+), 1 deletion(-) Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c index 72bc1192bd30..fd1886faf33a 100644 --- a/drivers/cpufreq/mt8173-cpufreq.c +++ b/drivers/cpufreq/mt8173-cpufreq.c @@ -573,14 +573,33 @@ static struct platform_driver mt8173_cpufreq_platdrv = { .probe = mt8173_cpufreq_probe, }; +/* List of machines supported by this driver */ +static const struct of_device_id mt8173_cpufreq_machines[] __initconst = { + { .compatible = "mediatek,mt817x", }, + { .compatible = "mediatek,mt8173", }, + { .compatible = "mediatek,mt8176", }, + + { } +}; + static int __init mt8173_cpufreq_driver_init(void) { + struct device_node *np; + const struct of_device_id *match; struct platform_device *pdev; int err; - if (!of_machine_is_compatible("mediatek,mt8173")) + np = of_find_node_by_path("/"); + if (!np) return -ENODEV; + match = of_match_node(mt8173_cpufreq_machines, np); + of_node_put(np); + if (!match) { + pr_warn("Machine is not compatible with mt8173-cpufreq\n"); + return -ENODEV; + } + err = platform_driver_register(&mt8173_cpufreq_platdrv); if (err) return err;
The Mediatek MT8173 is just one 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@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/ v2: - use of_match_node (Thanks, Viresh!) drivers/cpufreq/mt8173-cpufreq.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)