MFC r266960:

  Configure the analog input 7 which, on BBB, is connected to the 3V3B rail
  through a voltage divisor (R163 and R164 on page 4 of BBB schematic).

  Add a note about this on ti_adc(4) man page.  The ti_adc(4) man page will
  first appear on 10.1-RELEASE.

  Suggested by: Sulev-Madis Silber (ketas)
  Manual page reviewed by:      brueffer (D127)

4 files changed, 17 insertions, 5 deletions

diff --git a/share/man/man4/man4.arm/ti_adc.4 b/share/man/man4/man4.arm/ti_adc.4
index b10760a..aa80016 100644
--- a/share/man/man4/man4.arm/ti_adc.4
+++ b/share/man/man4/man4.arm/ti_adc.4
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 21, 2014
+.Dd June 1, 2014
 .Dt TI_ADC 4
 .Os
 .Sh NAME
@@ -78,8 +78,17 @@ dev.ti_adc.0.ain.6.enable: 1
 dev.ti_adc.0.ain.6.open_delay: 0
 dev.ti_adc.0.ain.6.samples_avg: 4
 dev.ti_adc.0.ain.6.input: 2308
+dev.ti_adc.0.ain.7.enable: 1
+dev.ti_adc.0.ain.7.open_delay: 0
+dev.ti_adc.0.ain.7.samples_avg: 0
+dev.ti_adc.0.ain.7.input: 3812
 .Ed
 .Pp
+On Beaglebone-black the analog input 7 is connected to the 3V3B rail through
+a voltage divisor (2:1).
+The 3V3B voltage rail comes from the TL5209 LDO regulator which is limited
+to 500mA maximum.
+.Pp
 Global settings:
 .Bl -tag -width ".Va dev.ti_adc.0.clockdiv"
 .It Va dev.ti_adc.0.clockdiv
@@ -112,8 +121,8 @@ It is made of a 12 bit value (0 ~ 4095).
 The
 .Nm
 driver first appeared in
-.Fx 11.0 .
+.Fx 10.1 .
 .Sh AUTHORS
 .An -nosplit
 The driver and this manual page was written by
-.An Luiz Otavio O Souza Aq loos@FreeBSD.org
+.An Luiz Otavio O Souza Aq loos@FreeBSD.org .
diff --git a/sys/arm/ti/ti_adc.c b/sys/arm/ti/ti_adc.c
index af7d6d0..c5710d7 100644
--- a/sys/arm/ti/ti_adc.c
+++ b/sys/arm/ti/ti_adc.c
@@ -50,7 +50,7 @@ __FBSDID("$FreeBSD$");
 #include <arm/ti/ti_adcreg.h>
 #include <arm/ti/ti_adcvar.h>
 
-/* Define our 7 steps, one for each input channel. */
+/* Define our 8 steps, one for each input channel. */
 static struct ti_adc_input ti_adc_inputs[TI_ADC_NPINS] = {
 	{ .stepconfig = ADC_STEPCFG1, .stepdelay = ADC_STEPDLY1 },
 	{ .stepconfig = ADC_STEPCFG2, .stepdelay = ADC_STEPDLY2 },
@@ -59,6 +59,7 @@ static struct ti_adc_input ti_adc_inputs[TI_ADC_NPINS] = {
 	{ .stepconfig = ADC_STEPCFG5, .stepdelay = ADC_STEPDLY5 },
 	{ .stepconfig = ADC_STEPCFG6, .stepdelay = ADC_STEPDLY6 },
 	{ .stepconfig = ADC_STEPCFG7, .stepdelay = ADC_STEPDLY7 },
+	{ .stepconfig = ADC_STEPCFG8, .stepdelay = ADC_STEPDLY8 },
 };
 
 static int ti_adc_samples[5] = { 0, 2, 4, 8, 16 };
diff --git a/sys/arm/ti/ti_adcreg.h b/sys/arm/ti/ti_adcreg.h
index ffc15a2..1772f25 100644
--- a/sys/arm/ti/ti_adcreg.h
+++ b/sys/arm/ti/ti_adcreg.h
@@ -81,6 +81,8 @@
 #define	ADC_STEPDLY6		0x090
 #define	ADC_STEPCFG7		0x094
 #define	ADC_STEPDLY7		0x098
+#define	ADC_STEPCFG8		0x09c
+#define	ADC_STEPDLY8		0x0a0
 #define	ADC_STEP_DIFF_CNTRL		(1 << 25)
 #define	ADC_STEP_RFM_MSK		0x01800000
 #define	ADC_STEP_RFM_SHIFT		23
diff --git a/sys/arm/ti/ti_adcvar.h b/sys/arm/ti/ti_adcvar.h
index 912a78c..409ec7b 100644
--- a/sys/arm/ti/ti_adcvar.h
+++ b/sys/arm/ti/ti_adcvar.h
@@ -29,7 +29,7 @@
 #ifndef _TI_ADCVAR_H_
 #define _TI_ADCVAR_H_
 
-#define	TI_ADC_NPINS	7
+#define	TI_ADC_NPINS	8
 
 #define	ADC_READ4(_sc, reg)	bus_read_4((_sc)->sc_mem_res, reg)
 #define	ADC_WRITE4(_sc, reg, value)	\