linux-kernel - [PATCH] regulator: lp8755: Fix mask for pchip->mphase

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Date:	Wed, 26 Dec 2012 10:12:07 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Daniel Jeong <gshark.jeong@...il.com>, Liam Girdwood <lrg@...com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: lp8755: Fix mask for pchip->mphase

According to lp8755.h:
enum lp8755_mphase_config {
        MPHASE_CONF0,
        MPHASE_CONF1,
        MPHASE_CONF2,
        MPHASE_CONF3,
        MPHASE_CONF4,
        MPHASE_CONF5,
        MPHASE_CONF6,
        MPHASE_CONF7,
        MPHASE_CONF8,
        MPHASE_CONF_MAX
};

MPHASE_CONF_MAX is 9, the mask for pchip->mphase should be 0x17.
Otherwise, we cannot differentiate MPHASE_CONF0 and MPHASE_CONF8.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
Hi Daniel,
I don't have the datasheet, can you check if this patch is correct?

BTW, I'm Axel, not Alex.

Regards,
Axel
 drivers/regulator/lp8755.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/lp8755.c b/drivers/regulator/lp8755.c
index 06a82e2..6d5a11d 100644
--- a/drivers/regulator/lp8755.c
+++ b/drivers/regulator/lp8755.c
@@ -301,7 +301,7 @@ static int lp8755_init_data(struct lp8755_chip *pchip)
 	ret = lp8755_read(pchip, 0x3D, &regval);
 	if (ret < 0)
 		goto out_i2c_error;
-	pchip->mphase = regval & 0x07;
+	pchip->mphase = regval & 0x17;
 
 	/* set default data based on multi-phase config */
 	for (icnt = 0; icnt < mphase_buck[pchip->mphase].nreg; icnt++) {
-- 
1.7.9.5



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