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| author | Anson Huang <Anson.Huang@nxp.com> | 2019-10-22 11:33:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-13 10:43:28 +0300 |
| commit | 7a5e10c1d67150eeeb31928db5df9de4f038db5b (patch) | |
| tree | b0d531c8c683e926115b75f46d7d27f78722f24d /drivers/cpufreq | |
| parent | 0d4e867e0cfe07543560b9ac695614d4a86ca3ae (diff) | |
| download | linux-7a5e10c1d67150eeeb31928db5df9de4f038db5b.tar.xz | |
cpufreq: imx-cpufreq-dt: Correct i.MX8MN's default speed grade value
[ Upstream commit af44d180e3de4cb411ce327b147ea3513f0bbbcb ]
i.MX8MN has different speed grade definition compared to
i.MX8MQ/i.MX8MM, when fuses are NOT written, the default
speed_grade should be set to minimum available OPP defined
in DT which is 1.2GHz, the corresponding speed_grade value
should be 0xb.
Fixes: 5b8010ba70d5 ("cpufreq: imx-cpufreq-dt: Add i.MX8MN support")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/imx-cpufreq-dt.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c index 35db14cf3102..85a6efd6b68f 100644 --- a/drivers/cpufreq/imx-cpufreq-dt.c +++ b/drivers/cpufreq/imx-cpufreq-dt.c @@ -44,19 +44,19 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev) mkt_segment = (cell_value & OCOTP_CFG3_MKT_SEGMENT_MASK) >> OCOTP_CFG3_MKT_SEGMENT_SHIFT; /* - * Early samples without fuses written report "0 0" which means - * consumer segment and minimum speed grading. - * - * According to datasheet minimum speed grading is not supported for - * consumer parts so clamp to 1 to avoid warning for "no OPPs" + * Early samples without fuses written report "0 0" which may NOT + * match any OPP defined in DT. So clamp to minimum OPP defined in + * DT to avoid warning for "no OPPs". * * Applies to i.MX8M series SoCs. */ - if (mkt_segment == 0 && speed_grade == 0 && ( - of_machine_is_compatible("fsl,imx8mm") || - of_machine_is_compatible("fsl,imx8mn") || - of_machine_is_compatible("fsl,imx8mq"))) - speed_grade = 1; + if (mkt_segment == 0 && speed_grade == 0) { + if (of_machine_is_compatible("fsl,imx8mm") || + of_machine_is_compatible("fsl,imx8mq")) + speed_grade = 1; + if (of_machine_is_compatible("fsl,imx8mn")) + speed_grade = 0xb; + } supported_hw[0] = BIT(speed_grade); supported_hw[1] = BIT(mkt_segment); |