linux-kernel - [PATCH v3 2/4] i2c: at91: fix clk

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Message-ID: <1575886763-19089-2-git-send-email-eugen.hristev@microchip.com>
Date:   Mon, 9 Dec 2019 10:20:02 +0000
From:   <Eugen.Hristev@...rochip.com>
To:     <robh@...nel.org>, <Ludovic.Desroches@...rochip.com>,
        <wsa@...-dreams.de>
CC:     <peda@...ntia.se>, <linux-i2c@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <Codrin.Ciubotariu@...rochip.com>,
        <Eugen.Hristev@...rochip.com>
Subject: [PATCH v3 2/4] i2c: at91: fix clk_offset for sam9x60

From: Eugen Hristev <eugen.hristev@...rochip.com>

In SAM9X60 datasheet, FLEX_TWI_CWGR register description mentions clock
offset of 3 cycles (compared to 4 in eg. SAMA5D3).
This is the same offset as in SAMA5D2.

Fixes: b00277923743 ("i2c: at91: add new platform support for sam9x60")
Suggested-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
---
Changes in v3:
- fixed typo in commit description

Changes in v2:
- Sorry, wrong subject line. Modified to SAM9X60 .


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

diff --git a/drivers/i2c/busses/i2c-at91-core.c b/drivers/i2c/busses/i2c-at91-core.c
index e13af48..5137e62 100644
--- a/drivers/i2c/busses/i2c-at91-core.c
+++ b/drivers/i2c/busses/i2c-at91-core.c
@@ -174,7 +174,7 @@ static struct at91_twi_pdata sama5d2_config = {
 
 static struct at91_twi_pdata sam9x60_config = {
 	.clk_max_div = 7,
-	.clk_offset = 4,
+	.clk_offset = 3,
 	.has_unre_flag = true,
 	.has_alt_cmd = true,
 	.has_hold_field = true,
-- 
2.7.4