From: Paul Gerber <Paul.Gerber@xxxxxxxxxxxx>
[ Upstream commit 3de89d8842a2b5d3dd22ebf97dd561ae0a330948 ]
The i.MX 8MP has a ADC_PD bit in the TMU_TER register that controls the
operating mode of the ADC:
* 0 means normal operating mode
* 1 means power down mode
When enabling/disabling the TMU, the ADC operating mode must be set
accordingly.
i.MX 8M Mini & Nano are lacking this bit.
Signed-off-by: Paul Gerber <Paul.Gerber@xxxxxxxxxxxx>
Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
Fixes: 2b8f1f0337c5 ("thermal: imx8mm: Add i.MX8MP support")
Link: https://lore.kernel.org/r/20211122114225.196280-1-alexander.stein@xxxxxxxxxxxxxxx
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/thermal/imx8mm_thermal.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/thermal/imx8mm_thermal.c b/drivers/thermal/imx8mm_thermal.c
index a1e4f9bb4cb01..0f4cabd2a8c62 100644
--- a/drivers/thermal/imx8mm_thermal.c
+++ b/drivers/thermal/imx8mm_thermal.c
@@ -21,6 +21,7 @@
#define TPS 0x4
#define TRITSR 0x20 /* TMU immediate temp */
+#define TER_ADC_PD BIT(30)
#define TER_EN BIT(31)
#define TRITSR_TEMP0_VAL_MASK 0xff
#define TRITSR_TEMP1_VAL_MASK 0xff0000
@@ -113,6 +114,8 @@ static void imx8mm_tmu_enable(struct imx8mm_tmu *tmu, bool enable)
val = readl_relaxed(tmu->base + TER);
val = enable ? (val | TER_EN) : (val & ~TER_EN);
+ if (tmu->socdata->version == TMU_VER2)
+ val = enable ? (val & ~TER_ADC_PD) : (val | TER_ADC_PD);
writel_relaxed(val, tmu->base + TER);
}
--
2.34.1
