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From: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
To: linux-i2c@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, wsa@the-dreams.de,
	robert.jarzmik@free.fr, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, robh+dt@kernel.org,
	Vaibhav Hiremath <vaibhav.hiremath@linaro.org>,
	"Jett.Zhou" <jtzhou@marvell.com>
Subject: [PATCH-v3 02/11] i2c: pxa: No need to set slave addr for i2c master mode reset
Date: Tue,  7 Jul 2015 00:54:46 +0530	[thread overview]
Message-ID: <1436210695-19159-3-git-send-email-vaibhav.hiremath@linaro.org> (raw)
In-Reply-To: <1436210695-19159-1-git-send-email-vaibhav.hiremath@linaro.org>

Normally i2c controller works as master, so slave addr is not needed, or it
will impact some slave device (eg. ST NFC chip) i2c accesses, because it has
the same i2c address with controller.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
 drivers/i2c/busses/i2c-pxa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index f4ac8c5..023e59f 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -459,7 +459,7 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
 	writel(I2C_ISR_INIT, _ISR(i2c));
 	writel(readl(_ICR(i2c)) & ~ICR_UR, _ICR(i2c));
 
-	if (i2c->reg_isar)
+	if (i2c->reg_isar && IS_ENABLED(CONFIG_I2C_PXA_SLAVE))
 		writel(i2c->slave_addr, _ISAR(i2c));
 
 	/* set control register values */
-- 
1.9.1

  parent reply	other threads:[~2015-07-06 19:24 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-06 19:24 [PATCH-v3 00/11] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
2015-07-06 19:24 ` [PATCH-v3 01/11] i2c: pxa: keep i2c irq ON in suspend Vaibhav Hiremath
2015-07-06 19:24 ` Vaibhav Hiremath [this message]
     [not found]   ` <1436210695-19159-3-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-10  8:11     ` [PATCH-v3 02/11] i2c: pxa: No need to set slave addr for i2c master mode reset Wolfram Sang
2015-07-10 12:38       ` Vaibhav Hiremath
     [not found]         ` <559FBCD3.4050402-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-10 14:14           ` Wolfram Sang
2015-07-10 14:25             ` Vaibhav Hiremath
     [not found]               ` <559FD5DB.9030308-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-10 14:56                 ` Wolfram Sang
2015-07-13  7:09                   ` Vaibhav Hiremath
2015-07-06 19:24 ` [PATCH-v3 04/11] i2c: pxa: Remove compile warnning in 64bit mode Vaibhav Hiremath
     [not found]   ` <1436210695-19159-5-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-10  8:13     ` Wolfram Sang
2015-07-10 13:01       ` Vaibhav Hiremath
2015-07-10  8:25     ` Uwe Kleine-König
2015-07-06 19:24 ` [PATCH-v3 05/11] i2c: pxa: Update debug function to dump more info on error Vaibhav Hiremath
2015-07-06 19:24 ` [PATCH-v3 06/11] i2c:pxa: Use devm_ variants in probe function Vaibhav Hiremath
     [not found]   ` <1436210695-19159-7-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-10  8:18     ` Wolfram Sang
2015-07-06 19:24 ` [PATCH-v3 07/11] i2c: pxa: enable/disable i2c module across msg xfer Vaibhav Hiremath
     [not found]   ` <1436210695-19159-8-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-10  8:24     ` Wolfram Sang
2015-07-13 16:41       ` Vaibhav Hiremath
2015-07-06 19:24 ` [PATCH-v3 08/11] Documentation: binding: add new property 'disable_after_xfer' to i2c-pxa Vaibhav Hiremath
     [not found] ` <1436210695-19159-1-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-07-06 19:24   ` [PATCH-v3 03/11] i2c: pxa: Return I2C_RETRY when timeout in pio mode Vaibhav Hiremath
2015-07-06 19:24   ` [PATCH-v3 09/11] i2c: pxa: Add support for pxa910/988 & new configuration features Vaibhav Hiremath
2015-07-06 19:24 ` [PATCH-v3 10/11] i2c: pxa: Add ILCR (tLow & tHigh) configuration support Vaibhav Hiremath
2015-07-06 19:24 ` [PATCH-v3 11/11] Documentation: binding: add sclk adjustment properties to i2c-pxa Vaibhav Hiremath

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