On 22-10-19, 12:39, Anson Huang wrote:
> 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 <[email protected]>
> ---
> drivers/cpufreq/imx-cpufreq-dt.c | 20 ++++++++++----------
> 1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/cpufreq/imx-cpufreq-dt.c
> b/drivers/cpufreq/imx-cpufreq-dt.c
> index 35db14c..26531f0 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"))
of_machine_is_compatible should come right below the above
of_machine_is_compatible here, instead of a leading tab.
> + 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);
> --
> 2.7.4
--
viresh
