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soc: nxp: k6x: enable bandgap buffer if temperature sensor is enabled

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Enable the bandgap buffer on the NXP Kinetis K6x SoC series Power
Management Controller (PMC) if the internal temperature sensor is in
use.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2020-01-13 23:03:45 +01:00 • committed by Maureen Helm
commit 774367b14a
1 changed files with 5 additions and 0 deletions
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5
soc/arm/nxp_kinetis/k6x/soc.c
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@ -135,6 +135,11 @@ static int fsl_frdm_k64f_init(struct device *arg)
/* release I/O power hold to allow normal run state */
PMC->REGSC |= PMC_REGSC_ACKISO_MASK;
#ifdef CONFIG_TEMP_KINETIS
/* enable bandgap buffer */
PMC->REGSC |= PMC_REGSC_BGBE_MASK;
#endif /* CONFIG_TEMP_KINETIS */
#if !defined(CONFIG_ARM_MPU)
/*
* Disable memory protection and clear slave port errors.