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From: Trent Piepho <trent.piepho@synapse.com>
To: barebox@lists.infradead.org
Cc: Trent Piepho <trent.piepho@synapse.com>
Subject: [PATCH 4/4] ARM: beaglebone: Enable ADC
Date: Wed,  9 Sep 2020 12:36:50 -0700	[thread overview]
Message-ID: <20200909193650.347646-4-trent.piepho@synapse.com> (raw)
In-Reply-To: <20200909193650.347646-1-trent.piepho@synapse.com>

On the BeagleBone Black, enable the dts node for the TSC/ADC.  Add a
simple configuration that maps all eight channels in order.  AIN[0:6]
are exposed on connector P9, while AIN7 measures the 3.3V rail divided
by 2.

Signed-off-by: Trent Piepho <trent.piepho@synapse.com>
---
 arch/arm/dts/am335x-boneblack.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/dts/am335x-boneblack.dts b/arch/arm/dts/am335x-boneblack.dts
index 80d710b92..c06a532e4 100644
--- a/arch/arm/dts/am335x-boneblack.dts
+++ b/arch/arm/dts/am335x-boneblack.dts
@@ -85,3 +85,13 @@
 		status = "okay";
 	};
 };
+
+&tscadc {
+	status = "okay";
+	adc {
+		/* Ch 0-6 are on connector P9.	Ch 7 measures the 3.3V rail
+		 * divided by 2 (e.g., it should read 1650).
+		 */
+		ti,adc-channels = <0>, <1>, <2>, <3>, <4>, <5>, <6>, <7>;
+	};
+};
-- 
2.25.4


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  parent reply	other threads:[~2020-09-09 19:37 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-09 19:36 [PATCH 1/4] aiodev: Name channels with device instance name Trent Piepho
2020-09-09 19:36 ` [PATCH 2/4] aiodev: am335x_adc: Driver for ADC on TI AM335x SoCs Trent Piepho
2020-09-09 19:36 ` [PATCH 3/4] ARM: am335x: Enable TSC/ADC clock Trent Piepho
2020-09-09 19:36 ` Trent Piepho [this message]
2020-09-10  8:44 ` [PATCH 1/4] aiodev: Name channels with device instance name Ahmad Fatoum
2020-09-11 17:50   ` Trent Piepho
2020-09-14 10:45     ` Ahmad Fatoum
2020-09-15 12:58 ` Sascha Hauer

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