[v5,07/11] cpufreq: dt-platdev: Blacklist NVIDIA Tegra20 and Tegra30 SoCs
diff mbox series

Message ID 20191118164512.8676-8-digetx@gmail.com
State Under Review
Headers show
Series
  • NVIDIA Tegra20 CPUFreq driver major update
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Commit Message

Dmitry Osipenko Nov. 18, 2019, 4:45 p.m. UTC
Both NVIDIA Tegra20 and Tegra30 SoCs should be blacklisted because CPU
OPPs use supported_hw and thus platdev isn't suitable for these SoCs.
Currently cpufreq-dt driver produces a bit annoying warning splats
during boot because valid OPPs are not found, this will be fixed once
tegra20-cpufreq driver will be update to support cpufreq-dt. The warnings
will also happen on older stable kernels using newer device-trees, thus
this patch should be backported to stable kernels as well.

Cc: <stable@vger.kernel.org>
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Fixes: 4053aa65c517 ("ARM: tegra: cardhu-a04: Add CPU Operating Performance Points")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/cpufreq/cpufreq-dt-platdev.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Dmitry Osipenko Nov. 18, 2019, 4:51 p.m. UTC | #1
18.11.2019 19:45, Dmitry Osipenko пишет:
> Both NVIDIA Tegra20 and Tegra30 SoCs should be blacklisted because CPU
> OPPs use supported_hw and thus platdev isn't suitable for these SoCs.
> Currently cpufreq-dt driver produces a bit annoying warning splats
> during boot because valid OPPs are not found, this will be fixed once
> tegra20-cpufreq driver will be update to support cpufreq-dt. The warnings
> will also happen on older stable kernels using newer device-trees, thus
> this patch should be backported to stable kernels as well.
> 
> Cc: <stable@vger.kernel.org>
> Reported-by: Jon Hunter <jonathanh@nvidia.com>
> Fixes: 4053aa65c517 ("ARM: tegra: cardhu-a04: Add CPU Operating Performance Points")
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  drivers/cpufreq/cpufreq-dt-platdev.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
> index f1d170dcf4d3..aba591d57c67 100644
> --- a/drivers/cpufreq/cpufreq-dt-platdev.c
> +++ b/drivers/cpufreq/cpufreq-dt-platdev.c
> @@ -121,6 +121,8 @@ static const struct of_device_id blacklist[] __initconst = {
>  	{ .compatible = "mediatek,mt8176", },
>  	{ .compatible = "mediatek,mt8183", },
>  
> +	{ .compatible = "nvidia,tegra20", },
> +	{ .compatible = "nvidia,tegra30", },
>  	{ .compatible = "nvidia,tegra124", },
>  	{ .compatible = "nvidia,tegra210", },
>  
> 

Hello Viresh,

Could you please pick up this patch for v5.5 fixes? Thanks in advance!

Patch
diff mbox series

diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index f1d170dcf4d3..aba591d57c67 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -121,6 +121,8 @@  static const struct of_device_id blacklist[] __initconst = {
 	{ .compatible = "mediatek,mt8176", },
 	{ .compatible = "mediatek,mt8183", },
 
+	{ .compatible = "nvidia,tegra20", },
+	{ .compatible = "nvidia,tegra30", },
 	{ .compatible = "nvidia,tegra124", },
 	{ .compatible = "nvidia,tegra210", },