* [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel
@ 2017-03-15 15:59 Lukasz Majewski
2017-03-15 15:59 ` [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters Lukasz Majewski
2017-03-27 8:04 ` [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
0 siblings, 2 replies; 6+ messages in thread
From: Lukasz Majewski @ 2017-03-15 15:59 UTC (permalink / raw)
To: u-boot
v4.9 Linux release:
SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
in the ./drivers/i2c/busses/i2c-omap.c
recommends to use SCLH=5 and SCLL=7 values.
This patch sets them to default.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
---
drivers/i2c/omap24xx_i2c.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/i2c/omap24xx_i2c.h b/drivers/i2c/omap24xx_i2c.h
index 3dae295..8a4ae98 100644
--- a/drivers/i2c/omap24xx_i2c.h
+++ b/drivers/i2c/omap24xx_i2c.h
@@ -121,17 +121,17 @@
* scll_trim = 7
* sclh_trim = 5
*
- * The linux 2.6.30 kernel uses
- * scll_trim = 6
- * sclh_trim = 6
+ * The linux 4.9 kernel uses
+ * scll_trim = 7
+ * sclh_trim = 5
*
* These are the trim values for standard and fast speed
*/
#ifndef I2C_FASTSPEED_SCLL_TRIM
-#define I2C_FASTSPEED_SCLL_TRIM 6
+#define I2C_FASTSPEED_SCLL_TRIM 7
#endif
#ifndef I2C_FASTSPEED_SCLH_TRIM
-#define I2C_FASTSPEED_SCLH_TRIM 6
+#define I2C_FASTSPEED_SCLH_TRIM 5
#endif
/* These are the trim values for high speed */
--
2.1.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters
2017-03-15 15:59 [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
@ 2017-03-15 15:59 ` Lukasz Majewski
2017-03-27 8:04 ` Lukasz Majewski
2017-03-27 8:04 ` [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
1 sibling, 1 reply; 6+ messages in thread
From: Lukasz Majewski @ 2017-03-15 15:59 UTC (permalink / raw)
To: u-boot
This patch updates the way in which psc, sscl and ssch I2C parameters are
calculated to be in sync with v4.9 Linux kernel
SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
in the ./drivers/i2c/busses/i2c-omap.c
The previous method was causing several issues:
- The internal I2C frequency (after prescaler) was far above recommended
one (7 - 12 MHz [*]) - the current approach brings better noise suppression
(as stated in Linux commit: SHA1: 84bf2c868f3ca996e5bb)
- The values calculated (psc, sscl and ssch) were far from optimal, which
caused on the test platform (AM57xx) the I2C0 SCL signal low time (Fast
Mode) of ~1.0us (the standard requires > 1.3 us).
[*] for AM57xx TRM SPRUHZ6G, Table 24,7
"HS I2C Register Values for Maximum I2C Bit Rates in I2C F/S, I2C HS Modes"
Signed-off-by: Lukasz Majewski <lukma@denx.de>
---
drivers/i2c/omap24xx_i2c.c | 66 ++++++++++++++++++++++++++++------------------
1 file changed, 41 insertions(+), 25 deletions(-)
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index 0006343..26996e9 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -64,36 +64,52 @@ struct omap_i2c {
static int omap24_i2c_findpsc(u32 *pscl, u32 *psch, uint speed)
{
- unsigned int sampleclk, prescaler;
- int fsscll, fssclh;
+ unsigned long internal_clk = 0, fclk;
+ unsigned int prescaler;
- speed <<= 1;
- prescaler = 0;
/*
- * some divisors may cause a precission loss, but shouldn't
- * be a big thing, because i2c_clk is then allready very slow.
+ * This method is only called for Standard and Fast Mode speeds
+ *
+ * For some TI SoCs it is explicitly written in TRM (e,g, SPRUHZ6G,
+ * page 5685, Table 24-7)
+ * that the internal I2C clock (after prescaler) should be between
+ * 7-12 MHz (at least for Fast Mode (FS)).
+ *
+ * Such approach is used in v4.9 Linux kernel in:
+ * ./drivers/i2c/busses/i2c-omap.c (omap_i2c_init function).
*/
- while (prescaler <= 0xFF) {
- sampleclk = I2C_IP_CLK / (prescaler+1);
- fsscll = sampleclk / speed;
- fssclh = fsscll;
- fsscll -= I2C_FASTSPEED_SCLL_TRIM;
- fssclh -= I2C_FASTSPEED_SCLH_TRIM;
-
- if (((fsscll > 0) && (fssclh > 0)) &&
- ((fsscll <= (255-I2C_FASTSPEED_SCLL_TRIM)) &&
- (fssclh <= (255-I2C_FASTSPEED_SCLH_TRIM)))) {
- if (pscl)
- *pscl = fsscll;
- if (psch)
- *psch = fssclh;
-
- return prescaler;
- }
- prescaler++;
+ speed /= 1000; /* convert speed to kHz */
+
+ if (speed > 100)
+ internal_clk = 9600;
+ else
+ internal_clk = 4000;
+
+ fclk = I2C_IP_CLK / 1000;
+ prescaler = fclk / internal_clk;
+ prescaler = prescaler - 1;
+
+ if (speed > 100) {
+ unsigned long scl;
+
+ /* Fast mode */
+ scl = internal_clk / speed;
+ *pscl = scl - (scl / 3) - I2C_FASTSPEED_SCLL_TRIM;
+ *psch = (scl / 3) - I2C_FASTSPEED_SCLH_TRIM;
+ } else {
+ /* Standard mode */
+ *pscl = internal_clk / (speed * 2) - I2C_FASTSPEED_SCLL_TRIM;
+ *psch = internal_clk / (speed * 2) - I2C_FASTSPEED_SCLH_TRIM;
}
- return -1;
+
+ debug("%s: speed [kHz]: %d psc: 0x%x sscl: 0x%x ssch: 0x%x\n",
+ __func__, speed, prescaler, *pscl, *psch);
+
+ if (*pscl <= 0 || *psch <= 0 || prescaler <= 0)
+ return -EINVAL;
+
+ return prescaler;
}
/*
--
2.1.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel
2017-03-15 15:59 [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
2017-03-15 15:59 ` [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters Lukasz Majewski
@ 2017-03-27 8:04 ` Lukasz Majewski
2017-03-27 8:46 ` Heiko Schocher
1 sibling, 1 reply; 6+ messages in thread
From: Lukasz Majewski @ 2017-03-27 8:04 UTC (permalink / raw)
To: u-boot
Dear All,
> v4.9 Linux release:
> SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
> in the ./drivers/i2c/busses/i2c-omap.c
>
> recommends to use SCLH=5 and SCLL=7 values.
> This patch sets them to default.
Any comments on this?
>
> Signed-off-by: Lukasz Majewski <lukma@denx.de>
> ---
> drivers/i2c/omap24xx_i2c.h | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/i2c/omap24xx_i2c.h b/drivers/i2c/omap24xx_i2c.h
> index 3dae295..8a4ae98 100644
> --- a/drivers/i2c/omap24xx_i2c.h
> +++ b/drivers/i2c/omap24xx_i2c.h
> @@ -121,17 +121,17 @@
> * scll_trim = 7
> * sclh_trim = 5
> *
> - * The linux 2.6.30 kernel uses
> - * scll_trim = 6
> - * sclh_trim = 6
> + * The linux 4.9 kernel uses
> + * scll_trim = 7
> + * sclh_trim = 5
> *
> * These are the trim values for standard and fast speed
> */
> #ifndef I2C_FASTSPEED_SCLL_TRIM
> -#define I2C_FASTSPEED_SCLL_TRIM 6
> +#define I2C_FASTSPEED_SCLL_TRIM 7
> #endif
> #ifndef I2C_FASTSPEED_SCLH_TRIM
> -#define I2C_FASTSPEED_SCLH_TRIM 6
> +#define I2C_FASTSPEED_SCLH_TRIM 5
> #endif
>
> /* These are the trim values for high speed */
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters
2017-03-15 15:59 ` [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters Lukasz Majewski
@ 2017-03-27 8:04 ` Lukasz Majewski
2017-03-27 8:46 ` Heiko Schocher
0 siblings, 1 reply; 6+ messages in thread
From: Lukasz Majewski @ 2017-03-27 8:04 UTC (permalink / raw)
To: u-boot
Dear All,
> This patch updates the way in which psc, sscl and ssch I2C parameters
> are calculated to be in sync with v4.9 Linux kernel
> SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
> in the ./drivers/i2c/busses/i2c-omap.c
Any comments on this?
>
> The previous method was causing several issues:
> - The internal I2C frequency (after prescaler) was far above
> recommended one (7 - 12 MHz [*]) - the current approach brings better
> noise suppression (as stated in Linux commit: SHA1:
> 84bf2c868f3ca996e5bb)
>
> - The values calculated (psc, sscl and ssch) were far from optimal,
> which caused on the test platform (AM57xx) the I2C0 SCL signal low
> time (Fast Mode) of ~1.0us (the standard requires > 1.3 us).
>
> [*] for AM57xx TRM SPRUHZ6G, Table 24,7
> "HS I2C Register Values for Maximum I2C Bit Rates in I2C F/S, I2C HS
> Modes"
>
> Signed-off-by: Lukasz Majewski <lukma@denx.de>
> ---
> drivers/i2c/omap24xx_i2c.c | 66
> ++++++++++++++++++++++++++++------------------ 1 file changed, 41
> insertions(+), 25 deletions(-)
>
> diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
> index 0006343..26996e9 100644
> --- a/drivers/i2c/omap24xx_i2c.c
> +++ b/drivers/i2c/omap24xx_i2c.c
> @@ -64,36 +64,52 @@ struct omap_i2c {
>
> static int omap24_i2c_findpsc(u32 *pscl, u32 *psch, uint speed)
> {
> - unsigned int sampleclk, prescaler;
> - int fsscll, fssclh;
> + unsigned long internal_clk = 0, fclk;
> + unsigned int prescaler;
>
> - speed <<= 1;
> - prescaler = 0;
> /*
> - * some divisors may cause a precission loss, but shouldn't
> - * be a big thing, because i2c_clk is then allready very
> slow.
> + * This method is only called for Standard and Fast Mode
> speeds
> + *
> + * For some TI SoCs it is explicitly written in TRM (e,g,
> SPRUHZ6G,
> + * page 5685, Table 24-7)
> + * that the internal I2C clock (after prescaler) should be
> between
> + * 7-12 MHz (at least for Fast Mode (FS)).
> + *
> + * Such approach is used in v4.9 Linux kernel in:
> + * ./drivers/i2c/busses/i2c-omap.c (omap_i2c_init function).
> */
> - while (prescaler <= 0xFF) {
> - sampleclk = I2C_IP_CLK / (prescaler+1);
>
> - fsscll = sampleclk / speed;
> - fssclh = fsscll;
> - fsscll -= I2C_FASTSPEED_SCLL_TRIM;
> - fssclh -= I2C_FASTSPEED_SCLH_TRIM;
> -
> - if (((fsscll > 0) && (fssclh > 0)) &&
> - ((fsscll <= (255-I2C_FASTSPEED_SCLL_TRIM)) &&
> - (fssclh <= (255-I2C_FASTSPEED_SCLH_TRIM)))) {
> - if (pscl)
> - *pscl = fsscll;
> - if (psch)
> - *psch = fssclh;
> -
> - return prescaler;
> - }
> - prescaler++;
> + speed /= 1000; /* convert speed to kHz */
> +
> + if (speed > 100)
> + internal_clk = 9600;
> + else
> + internal_clk = 4000;
> +
> + fclk = I2C_IP_CLK / 1000;
> + prescaler = fclk / internal_clk;
> + prescaler = prescaler - 1;
> +
> + if (speed > 100) {
> + unsigned long scl;
> +
> + /* Fast mode */
> + scl = internal_clk / speed;
> + *pscl = scl - (scl / 3) - I2C_FASTSPEED_SCLL_TRIM;
> + *psch = (scl / 3) - I2C_FASTSPEED_SCLH_TRIM;
> + } else {
> + /* Standard mode */
> + *pscl = internal_clk / (speed * 2) -
> I2C_FASTSPEED_SCLL_TRIM;
> + *psch = internal_clk / (speed * 2) -
> I2C_FASTSPEED_SCLH_TRIM; }
> - return -1;
> +
> + debug("%s: speed [kHz]: %d psc: 0x%x sscl: 0x%x ssch:
> 0x%x\n",
> + __func__, speed, prescaler, *pscl, *psch);
> +
> + if (*pscl <= 0 || *psch <= 0 || prescaler <= 0)
> + return -EINVAL;
> +
> + return prescaler;
> }
>
> /*
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel
2017-03-27 8:04 ` [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
@ 2017-03-27 8:46 ` Heiko Schocher
0 siblings, 0 replies; 6+ messages in thread
From: Heiko Schocher @ 2017-03-27 8:46 UTC (permalink / raw)
To: u-boot
Hello Lukasz,
Am 27.03.2017 um 10:04 schrieb Lukasz Majewski:
> Dear All,
>
>> v4.9 Linux release:
>> SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
>> in the ./drivers/i2c/busses/i2c-omap.c
>>
>> recommends to use SCLH=5 and SCLL=7 values.
>> This patch sets them to default.
>
> Any comments on this?
I am fine with it, it is in my queue for sending a pull
request to Tom.
bye,
Heiko
>
>>
>> Signed-off-by: Lukasz Majewski <lukma@denx.de>
>> ---
>> drivers/i2c/omap24xx_i2c.h | 10 +++++-----
>> 1 file changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/i2c/omap24xx_i2c.h b/drivers/i2c/omap24xx_i2c.h
>> index 3dae295..8a4ae98 100644
>> --- a/drivers/i2c/omap24xx_i2c.h
>> +++ b/drivers/i2c/omap24xx_i2c.h
>> @@ -121,17 +121,17 @@
>> * scll_trim = 7
>> * sclh_trim = 5
>> *
>> - * The linux 2.6.30 kernel uses
>> - * scll_trim = 6
>> - * sclh_trim = 6
>> + * The linux 4.9 kernel uses
>> + * scll_trim = 7
>> + * sclh_trim = 5
>> *
>> * These are the trim values for standard and fast speed
>> */
>> #ifndef I2C_FASTSPEED_SCLL_TRIM
>> -#define I2C_FASTSPEED_SCLL_TRIM 6
>> +#define I2C_FASTSPEED_SCLL_TRIM 7
>> #endif
>> #ifndef I2C_FASTSPEED_SCLH_TRIM
>> -#define I2C_FASTSPEED_SCLH_TRIM 6
>> +#define I2C_FASTSPEED_SCLH_TRIM 5
>> #endif
>>
>> /* These are the trim values for high speed */
>
>
>
>
> Best regards,
>
> Lukasz Majewski
>
> --
>
> DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
>
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters
2017-03-27 8:04 ` Lukasz Majewski
@ 2017-03-27 8:46 ` Heiko Schocher
0 siblings, 0 replies; 6+ messages in thread
From: Heiko Schocher @ 2017-03-27 8:46 UTC (permalink / raw)
To: u-boot
Hello Lukasz,
Am 27.03.2017 um 10:04 schrieb Lukasz Majewski:
> Dear All,
>
>> This patch updates the way in which psc, sscl and ssch I2C parameters
>> are calculated to be in sync with v4.9 Linux kernel
>> SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
>> in the ./drivers/i2c/busses/i2c-omap.c
>
> Any comments on this?
I am fine with it, it is in my queue for sending a pull
request to Tom.
bye,
Heiko
>
>>
>> The previous method was causing several issues:
>> - The internal I2C frequency (after prescaler) was far above
>> recommended one (7 - 12 MHz [*]) - the current approach brings better
>> noise suppression (as stated in Linux commit: SHA1:
>> 84bf2c868f3ca996e5bb)
>>
>> - The values calculated (psc, sscl and ssch) were far from optimal,
>> which caused on the test platform (AM57xx) the I2C0 SCL signal low
>> time (Fast Mode) of ~1.0us (the standard requires > 1.3 us).
>>
>> [*] for AM57xx TRM SPRUHZ6G, Table 24,7
>> "HS I2C Register Values for Maximum I2C Bit Rates in I2C F/S, I2C HS
>> Modes"
>>
>> Signed-off-by: Lukasz Majewski <lukma@denx.de>
>> ---
>> drivers/i2c/omap24xx_i2c.c | 66
>> ++++++++++++++++++++++++++++------------------ 1 file changed, 41
>> insertions(+), 25 deletions(-)
>>
>> diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
>> index 0006343..26996e9 100644
>> --- a/drivers/i2c/omap24xx_i2c.c
>> +++ b/drivers/i2c/omap24xx_i2c.c
>> @@ -64,36 +64,52 @@ struct omap_i2c {
>>
>> static int omap24_i2c_findpsc(u32 *pscl, u32 *psch, uint speed)
>> {
>> - unsigned int sampleclk, prescaler;
>> - int fsscll, fssclh;
>> + unsigned long internal_clk = 0, fclk;
>> + unsigned int prescaler;
>>
>> - speed <<= 1;
>> - prescaler = 0;
>> /*
>> - * some divisors may cause a precission loss, but shouldn't
>> - * be a big thing, because i2c_clk is then allready very
>> slow.
>> + * This method is only called for Standard and Fast Mode
>> speeds
>> + *
>> + * For some TI SoCs it is explicitly written in TRM (e,g,
>> SPRUHZ6G,
>> + * page 5685, Table 24-7)
>> + * that the internal I2C clock (after prescaler) should be
>> between
>> + * 7-12 MHz (at least for Fast Mode (FS)).
>> + *
>> + * Such approach is used in v4.9 Linux kernel in:
>> + * ./drivers/i2c/busses/i2c-omap.c (omap_i2c_init function).
>> */
>> - while (prescaler <= 0xFF) {
>> - sampleclk = I2C_IP_CLK / (prescaler+1);
>>
>> - fsscll = sampleclk / speed;
>> - fssclh = fsscll;
>> - fsscll -= I2C_FASTSPEED_SCLL_TRIM;
>> - fssclh -= I2C_FASTSPEED_SCLH_TRIM;
>> -
>> - if (((fsscll > 0) && (fssclh > 0)) &&
>> - ((fsscll <= (255-I2C_FASTSPEED_SCLL_TRIM)) &&
>> - (fssclh <= (255-I2C_FASTSPEED_SCLH_TRIM)))) {
>> - if (pscl)
>> - *pscl = fsscll;
>> - if (psch)
>> - *psch = fssclh;
>> -
>> - return prescaler;
>> - }
>> - prescaler++;
>> + speed /= 1000; /* convert speed to kHz */
>> +
>> + if (speed > 100)
>> + internal_clk = 9600;
>> + else
>> + internal_clk = 4000;
>> +
>> + fclk = I2C_IP_CLK / 1000;
>> + prescaler = fclk / internal_clk;
>> + prescaler = prescaler - 1;
>> +
>> + if (speed > 100) {
>> + unsigned long scl;
>> +
>> + /* Fast mode */
>> + scl = internal_clk / speed;
>> + *pscl = scl - (scl / 3) - I2C_FASTSPEED_SCLL_TRIM;
>> + *psch = (scl / 3) - I2C_FASTSPEED_SCLH_TRIM;
>> + } else {
>> + /* Standard mode */
>> + *pscl = internal_clk / (speed * 2) -
>> I2C_FASTSPEED_SCLL_TRIM;
>> + *psch = internal_clk / (speed * 2) -
>> I2C_FASTSPEED_SCLH_TRIM; }
>> - return -1;
>> +
>> + debug("%s: speed [kHz]: %d psc: 0x%x sscl: 0x%x ssch:
>> 0x%x\n",
>> + __func__, speed, prescaler, *pscl, *psch);
>> +
>> + if (*pscl <= 0 || *psch <= 0 || prescaler <= 0)
>> + return -EINVAL;
>> +
>> + return prescaler;
>> }
>>
>> /*
>
>
>
>
> Best regards,
>
> Lukasz Majewski
>
> --
>
> DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
>
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
^ permalink raw reply [flat|nested] 6+ messages in thread
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2017-03-15 15:59 [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
2017-03-15 15:59 ` [U-Boot] [PATCH 2/2] i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters Lukasz Majewski
2017-03-27 8:04 ` Lukasz Majewski
2017-03-27 8:46 ` Heiko Schocher
2017-03-27 8:04 ` [U-Boot] [PATCH 1/2] i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel Lukasz Majewski
2017-03-27 8:46 ` Heiko Schocher
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