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Merged in jjlange/nuttx (pull request #957)

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Only use PCLKSEL0 for ADC on LPC176x family.

Approved-by: Gregory Nutt <gnutt@nuttx.org>
This commit is contained in:
jjlange 2019-07-29 18:03:27 +00:00 committed by Gregory Nutt
parent 6e8b76c3ab
commit bc38e98862
1 changed files with 3 additions and 0 deletions
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arch/arm/src/lpc17xx_40xx/lpc17_40_adc.c
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@ -213,10 +213,13 @@ static void adc_reset(FAR struct adc_dev_s *dev)
putreg32(ADC_CR_PDN, LPC17_40_ADC_CR);
/* PCLKSEL0 only exists in LPC176x family parts */
#ifdef LPC176x
regval = getreg32(LPC17_40_SYSCON_PCLKSEL0);
regval &= ~SYSCON_PCLKSEL0_ADC_MASK;
regval |= (SYSCON_PCLKSEL_CCLK8 << SYSCON_PCLKSEL0_ADC_SHIFT);
putreg32(regval, LPC17_40_SYSCON_PCLKSEL0);
#endif
#ifdef CONFIG_LPC17_40_ADC_BURSTMODE
clkdiv = LPC17_40_CCLK / 3 / 65 / priv->sps;