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-rw-r--r--drivers/cpufreq/imx-cpufreq-dt.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c
index e1aa346efa10..35b6717d7255 100644
--- a/drivers/cpufreq/imx-cpufreq-dt.c
+++ b/drivers/cpufreq/imx-cpufreq-dt.c
@@ -50,6 +50,21 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
speed_grade = (cell_value & OCOTP_CFG3_SPEED_GRADE_MASK) >> OCOTP_CFG3_SPEED_GRADE_SHIFT;
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"
+ *
+ * Applies to 8mq and 8mm.
+ */
+ if (mkt_segment == 0 && speed_grade == 0 && (
+ !strcmp(match->compatible, "fsl,imx8mm") ||
+ !strcmp(match->compatible, "fsl,imx8mq")))
+ speed_grade = 1;
+
supported_hw[0] = BIT(speed_grade);
supported_hw[1] = BIT(mkt_segment);
dev_info(&pdev->dev, "cpu speed grade %d mkt segment %d supported-hw %#x %#x\n",
>
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