linux-kernel - [PATCH 5.2 096/131] i2c: at91: fix clk

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Message-Id: <20190805124958.394493325@linuxfoundation.org>
Date:   Mon,  5 Aug 2019 15:03:03 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH 5.2 096/131] i2c: at91: fix clk_offset for sama5d2

From: Michał Mirosław <mirq-linux@...e.qmqm.pl>

commit b1ac6704493fa14b5dc19eb6b69a73932361a131 upstream.

In SAMA5D2 datasheet, TWIHS_CWGR register rescription mentions clock
offset of 3 cycles (compared to 4 in eg. SAMA5D3).

Cc: stable@...r.kernel.org # 5.2.x
[needs applying to i2c-at91.c instead for earlier kernels]
Fixes: 0ef6f3213dac ("i2c: at91: add support for new alternative command mode")
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
Acked-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/i2c/busses/i2c-at91-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/busses/i2c-at91-core.c
+++ b/drivers/i2c/busses/i2c-at91-core.c
@@ -142,7 +142,7 @@ static struct at91_twi_pdata sama5d4_con
 
 static struct at91_twi_pdata sama5d2_config = {
 	.clk_max_div = 7,
-	.clk_offset = 4,
+	.clk_offset = 3,
 	.has_unre_flag = true,
 	.has_alt_cmd = true,
 	.has_hold_field = true,