From: Qii Wang <qii.wang@mediatek.com>
To: <wsa@the-dreams.de>
Cc: qii.wang@mediatek.com, srv_heupstream@mediatek.com,
leilk.liu@mediatek.com, linux-kernel@vger.kernel.org,
linux-mediatek@lists.infradead.org, linux-i2c@vger.kernel.org,
matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] i2c: mediatek: Send i2c master code at more than 1MHz
Date: Thu, 17 Sep 2020 19:55:42 +0800 [thread overview]
Message-ID: <1600343742-9731-3-git-send-email-qii.wang@mediatek.com> (raw)
In-Reply-To: <1600343742-9731-1-git-send-email-qii.wang@mediatek.com>
The master code needs to being sent when the speed is more than
I2C_MAX_FAST_MODE_PLUS_FREQ, not I2C_MAX_FAST_MODE_FREQ in the
latest I2C-bus specification and user manual.
Signed-off-by: Qii Wang <qii.wang@mediatek.com>
---
drivers/i2c/busses/i2c-mt65xx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index a1978eb..0cbdfbe 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -759,7 +759,7 @@ static int mtk_i2c_set_speed(struct mtk_i2c *i2c, unsigned int parent_clk)
for (clk_div = 1; clk_div <= max_clk_div; clk_div++) {
clk_src = parent_clk / clk_div;
- if (target_speed > I2C_MAX_FAST_MODE_FREQ) {
+ if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) {
/* Set master code speed register */
ret = mtk_i2c_calculate_speed(i2c, clk_src,
I2C_MAX_FAST_MODE_FREQ,
--
1.9.1
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next prev parent reply other threads:[~2020-09-17 12:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-17 11:55 [PATCH 0/2] Fix some definitions for bus frequency Qii Wang
2020-09-17 11:55 ` [PATCH 1/2] i2c: mediatek: Fix generic " Qii Wang
2020-09-18 20:52 ` wsa
2020-09-17 11:55 ` Qii Wang [this message]
2020-09-18 20:52 ` [PATCH 2/2] i2c: mediatek: Send i2c master code at more than 1MHz wsa
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