linux-kernel - [PATCH v2 3/3] drivers: mfd: ti_am335x_tscadc: increase ADC ref clock to 24MHz

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Date:   Fri, 11 Nov 2016 13:28:38 +0530
From:   Mugunthan V N <mugunthanvnm@...com>
To:     <linux-input@...r.kernel.org>
CC:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Lee Jones <lee.jones@...aro.org>, Sekhar Nori <nsekhar@...com>,
        Vignesh R <vigneshr@...com>, <devicetree@...r.kernel.org>,
        <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Mugunthan V N <mugunthanvnm@...com>
Subject: [PATCH v2 3/3] drivers: mfd: ti_am335x_tscadc: increase ADC ref clock to 24MHz

Increase ADC reference clock from 3MHz to 24MHz so that the
sampling rates goes up from 100K samples per second to 800K
samples per second on AM335x and AM437x SoC.

Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
---
 include/linux/mfd/ti_am335x_tscadc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h
index b9a53e013bff..f6c449b96ea5 100644
--- a/include/linux/mfd/ti_am335x_tscadc.h
+++ b/include/linux/mfd/ti_am335x_tscadc.h
@@ -137,7 +137,7 @@
 #define SEQ_STATUS BIT(5)
 #define CHARGE_STEP		0x11
 
-#define ADC_CLK			3000000
+#define ADC_CLK			24000000
 #define TOTAL_STEPS		16
 #define TOTAL_CHANNELS		8
 #define FIFO1_THRESHOLD		19
-- 
2.11.0.rc0.7.gbe5a750