Date: Sat, 31 Dec 2016 02:18:08 +0000 (UTC) From: Luiz Otavio O Souza <loos@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r310886 - head/sys/arm/ti/am335x Message-ID: <201612310218.uBV2I89a025322@repo.freebsd.org>
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Author: loos Date: Sat Dec 31 02:18:08 2016 New Revision: 310886 URL: https://svnweb.freebsd.org/changeset/base/310886 Log: Fixes the sensor initialization, always reset the digital outputs to start. Obtained from: pfSense MFC after: 3 days Sponsored by: Rubicon Communications, LLC (Netgate) Modified: head/sys/arm/ti/am335x/am335x_scm.c Modified: head/sys/arm/ti/am335x/am335x_scm.c ============================================================================== --- head/sys/arm/ti/am335x/am335x_scm.c Sat Dec 31 02:02:42 2016 (r310885) +++ head/sys/arm/ti/am335x/am335x_scm.c Sat Dec 31 02:18:08 2016 (r310886) @@ -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, ®); + DELAY(500); + /* Set continous mode. */ + ti_scm_reg_write_4(SCM_BGAP_CTRL, SCM_BGAP_CONTCONV); ti_scm_reg_read_4(SCM_BGAP_CTRL, ®); + 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);
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