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Fixes the sensor initialization, always reset the digital outputs to start.

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Obtained from:	pfSense
MFC after:	3 days
Sponsored by:	Rubicon Communications, LLC (Netgate)
This commit is contained in:
Luiz Otavio O Souza 2016-12-31 02:18:08 +00:00
parent d630035127
commit ab8fdacc82
1 changed files with 7 additions and 4 deletions
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11
sys/arm/ti/am335x/am335x_scm.c
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@ -110,11 +110,14 @@ am335x_scm_attach(device_t dev)
struct sysctl_oid_list *tree;
uint32_t reg;
/* Set ADC to continous mode, clear output reset. */
reg = SCM_BGAP_CLRZ | SCM_BGAP_CONTCONV;
ti_scm_reg_write_4(SCM_BGAP_CTRL, reg);
/* Flush write. */
/* Reset the digital outputs. */
ti_scm_reg_write_4(SCM_BGAP_CTRL, 0);
ti_scm_reg_read_4(SCM_BGAP_CTRL, &reg);
DELAY(500);
/* Set continous mode. */
ti_scm_reg_write_4(SCM_BGAP_CTRL, SCM_BGAP_CONTCONV);
ti_scm_reg_read_4(SCM_BGAP_CTRL, &reg);
DELAY(500);
/* Start the ADC conversion. */
reg = SCM_BGAP_CLRZ | SCM_BGAP_CONTCONV | SCM_BGAP_SOC;
ti_scm_reg_write_4(SCM_BGAP_CTRL, reg);