Messages in this thread Patch in this message | | | From | Marcus Folkesson <> | Subject | [PATCH v2] thermal: imx8mm_thermal: wait for a valid measurement | Date | Fri, 7 Oct 2022 09:30:57 +0200 |
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Check if first measurement is still pending or if temperature is out of range. Return and try again later if that is the case.
Fixes: 5eed800a6811 ("thermal: imx8mm: Add support for i.MX8MM thermal monitoring unit") Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> ---
Notes: v2: Also invalidate if temperature > max (125 degrees C)
drivers/thermal/imx8mm_thermal.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/thermal/imx8mm_thermal.c b/drivers/thermal/imx8mm_thermal.c index af666bd9e8d4..e42bf373cebc 100644 --- a/drivers/thermal/imx8mm_thermal.c +++ b/drivers/thermal/imx8mm_thermal.c @@ -62,11 +62,17 @@ static int imx8mm_tmu_get_temp(void *data, int *temp) { struct tmu_sensor *sensor = data; struct imx8mm_tmu *tmu = sensor->priv; - u32 val; + bool ready; + unsigned long val; + + val = readl_relaxed(tmu->base + TRITSR); + ready = test_bit(probe_status_offset(1), &val); + if (!ready) + return -EAGAIN; - val = readl_relaxed(tmu->base + TRITSR) & TRITSR_TEMP0_VAL_MASK; + val = val & TRITSR_TEMP0_VAL_MASK; *temp = val * 1000; - if (*temp < VER1_TEMP_LOW_LIMIT) + if (*temp < VER1_TEMP_LOW_LIMIT || *temp > VER2_TEMP_HIGH_LIMIT) return -EAGAIN; return 0; -- 2.37.1
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