| Message ID | 1599890246-21191-1-git-send-email-qii.wang@mediatek.com |
|---|---|
| State | New |
| Headers | show |
| Series | i2c: mediatek: Fix generic definitions for bus frequencies | expand |
On Sat, 2020-09-12 at 13:57 +0800, qii.wang@mediatek.com wrote: > From: Qii Wang <qii.wang@mediatek.com> > > The master code needs to being sent when the speed is more than > I2C_MAX_FAST_MODE_PLUS_FREQ instead of > I2C_MAX_HIGH_SPEED_MODE_FREQ. Fix it. This was introduced by "i2c: drivers: Use generic definitions for bus frequencies". You should have Fixes: 90224e6468e1 ("i2c: drivers: Use generic definitions for bus frequencies") You can have my reviewed by after you add fixes. Reviewed-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Joe.C > > Signed-off-by: Qii Wang <qii.wang@mediatek.com> > --- > drivers/i2c/busses/i2c-mt65xx.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c > index efc1404..0cbdfbe 100644 > --- a/drivers/i2c/busses/i2c-mt65xx.c > +++ b/drivers/i2c/busses/i2c-mt65xx.c > @@ -681,8 +681,8 @@ static int mtk_i2c_calculate_speed(struct mtk_i2c *i2c, unsigned int clk_src, > unsigned int cnt_mul; > int ret = -EINVAL; > > - if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) > - target_speed = I2C_MAX_FAST_MODE_PLUS_FREQ; > + if (target_speed > I2C_MAX_HIGH_SPEED_MODE_FREQ) > + target_speed = I2C_MAX_HIGH_SPEED_MODE_FREQ; > > max_step_cnt = mtk_i2c_max_step_cnt(target_speed); > base_step_cnt = max_step_cnt; > @@ -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,
On Mon, 2020-09-14 at 15:48 +0300, Andy Shevchenko wrote: > On Sat, Sep 12, 2020 at 9:02 AM <qii.wang@mediatek.com> wrote: > > > > From: Qii Wang <qii.wang@mediatek.com> > > > > The master code needs to being sent when the speed is more than > > I2C_MAX_FAST_MODE_PLUS_FREQ instead of > > I2C_MAX_HIGH_SPEED_MODE_FREQ. Fix it. > > > > Signed-off-by: Qii Wang <qii.wang@mediatek.com> > > --- > > drivers/i2c/busses/i2c-mt65xx.c | 6 +++--- > > 1 file changed, 3 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c > > index efc1404..0cbdfbe 100644 > > --- a/drivers/i2c/busses/i2c-mt65xx.c > > +++ b/drivers/i2c/busses/i2c-mt65xx.c > > @@ -681,8 +681,8 @@ static int mtk_i2c_calculate_speed(struct mtk_i2c *i2c, unsigned int clk_src, > > unsigned int cnt_mul; > > int ret = -EINVAL; > > > > - if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) > > - target_speed = I2C_MAX_FAST_MODE_PLUS_FREQ; > > + if (target_speed > I2C_MAX_HIGH_SPEED_MODE_FREQ) > > + target_speed = I2C_MAX_HIGH_SPEED_MODE_FREQ; > > Thanks for fixing this. Indeed, somehow I messed these up. > > > > > max_step_cnt = mtk_i2c_max_step_cnt(target_speed); > > base_step_cnt = max_step_cnt; > > @@ -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) { > > But this one is not related. Original code used to have > > #define MAX_FS_MODE_SPEED 400000 > > if (target_speed > MAX_FS_MODE_SPEED) { > > And this change doesn't fix the above mentioned problem. > > So, please split into two separate changes. > ok, Thank you for your comments > > /* Set master code speed register */ > > ret = mtk_i2c_calculate_speed(i2c, clk_src, > > I2C_MAX_FAST_MODE_FREQ, > > -- > > 1.9.1 > > >
> > - if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) > > - target_speed = I2C_MAX_FAST_MODE_PLUS_FREQ; > > + if (target_speed > I2C_MAX_HIGH_SPEED_MODE_FREQ) > > + target_speed = I2C_MAX_HIGH_SPEED_MODE_FREQ; > > Thanks for fixing this. Indeed, somehow I messed these up. I read this as Rev-by for v2. Thanks!
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index efc1404..0cbdfbe 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -681,8 +681,8 @@ static int mtk_i2c_calculate_speed(struct mtk_i2c *i2c, unsigned int clk_src, unsigned int cnt_mul; int ret = -EINVAL; - if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) - target_speed = I2C_MAX_FAST_MODE_PLUS_FREQ; + if (target_speed > I2C_MAX_HIGH_SPEED_MODE_FREQ) + target_speed = I2C_MAX_HIGH_SPEED_MODE_FREQ; max_step_cnt = mtk_i2c_max_step_cnt(target_speed); base_step_cnt = max_step_cnt; @@ -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,