Hi Simon, Hi Bin,
could you please let me know, what the status of I2C support for BayTrail in U-Boot is? Is this driver generic enough to handle BayTrail / Minnowboard MAX as well (I haven't looked in depth yet)? Or what needs to be done to get BayTrail supported here?
Thanks, Stefan
Hi Stefan,
On 11 March 2016 at 10:33, Stefan Roese sr@denx.de wrote:
Hi Simon, Hi Bin,
could you please let me know, what the status of I2C support for BayTrail in U-Boot is? Is this driver generic enough to handle BayTrail / Minnowboard MAX as well (I haven't looked in depth yet)? Or what needs to be done to get BayTrail supported here?
There is a dummy driver but it does not work. It needs to be filled out with an implementation using the datasheet or perhaps looking at coreboot smbus code.
Regards, Simon
Hi Stefan,
On Sun, Mar 13, 2016 at 10:52 AM, Simon Glass sjg@chromium.org wrote:
Hi Stefan,
On 11 March 2016 at 10:33, Stefan Roese sr@denx.de wrote:
Hi Simon, Hi Bin,
could you please let me know, what the status of I2C support for BayTrail in U-Boot is? Is this driver generic enough to handle BayTrail / Minnowboard MAX as well (I haven't looked in depth yet)? Or what needs to be done to get BayTrail supported here?
There is a dummy driver but it does not work. It needs to be filled out with an implementation using the datasheet or perhaps looking at coreboot smbus code.
I guess Stefan is not looking for legacy SMBUS support, instead the SIO I2C device on device 24 on BayTrail. It is currently not supported. The IP used on BayTrail is from Synopsis Designware, and this I2C IP is also seen on Intel Quark. It is possible we can reuse U-Boot Synopsis I2C driver on Intel platform, with adaptations to PCI.
Regards, Bin
Hi Bin,
On 14.03.2016 09:56, Bin Meng wrote:
On Sun, Mar 13, 2016 at 10:52 AM, Simon Glass sjg@chromium.org wrote:
Hi Stefan,
On 11 March 2016 at 10:33, Stefan Roese sr@denx.de wrote:
Hi Simon, Hi Bin,
could you please let me know, what the status of I2C support for BayTrail in U-Boot is? Is this driver generic enough to handle BayTrail / Minnowboard MAX as well (I haven't looked in depth yet)? Or what needs to be done to get BayTrail supported here?
There is a dummy driver but it does not work. It needs to be filled out with an implementation using the datasheet or perhaps looking at coreboot smbus code.
I guess Stefan is not looking for legacy SMBUS support, instead the SIO I2C device on device 24 on BayTrail.
I need to communicate with some of I2C devices connected to some of the I2C busses (e.g. bus #1) on this platform.
It is currently not supported. The IP used on BayTrail is from Synopsis Designware, and this I2C IP is also seen on Intel Quark.
Is it documented somewhere, that these BayTrail I2C controllers are Synopsis Designware based / compatible? Could you please point me to this datasheet?
It is possible we can reuse U-Boot Synopsis I2C driver on Intel platform, with adaptations to PCI.
I can definitely look into this. Thanks for letting me know.
Thanks, Stefan
Hi Stefan,
On Mon, Mar 14, 2016 at 8:30 PM, Stefan Roese sr@denx.de wrote:
Hi Bin,
On 14.03.2016 09:56, Bin Meng wrote:
On Sun, Mar 13, 2016 at 10:52 AM, Simon Glass sjg@chromium.org wrote:
Hi Stefan,
On 11 March 2016 at 10:33, Stefan Roese sr@denx.de wrote:
Hi Simon, Hi Bin,
could you please let me know, what the status of I2C support for BayTrail in U-Boot is? Is this driver generic enough to handle BayTrail / Minnowboard MAX as well (I haven't looked in depth yet)? Or what needs to be done to get BayTrail supported here?
There is a dummy driver but it does not work. It needs to be filled out with an implementation using the datasheet or perhaps looking at coreboot smbus code.
I guess Stefan is not looking for legacy SMBUS support, instead the SIO I2C device on device 24 on BayTrail.
I need to communicate with some of I2C devices connected to some of the I2C busses (e.g. bus #1) on this platform.
It is currently not supported. The IP used on BayTrail is from Synopsis Designware, and this I2C IP is also seen on Intel Quark.
Is it documented somewhere, that these BayTrail I2C controllers are Synopsis Designware based / compatible? Could you please point me to this datasheet?
I don't think it is documented somewhere that the IP comes from Synopsis Designware. I noticed this when I was working on Intel Quark support, that lots of IPs on Intel Quark are from Synopsis (eg: we have the Synopsis Designware ethernet driver working on Intel Quark).
It is possible we can reuse U-Boot Synopsis I2C driver on Intel platform, with adaptations to PCI.
I can definitely look into this. Thanks for letting me know.
Regards, Bin
participants (3)
-
Bin Meng -
Simon Glass -
Stefan Roese