[U-Boot] [PATCH] rpi: add Compute Module 3+

[Alexander Graf]

> Am 30.01.2019 um 22:38 schrieb Jonathan Gray <jsg at jsg.id.au>:
> 
>> On Wed, Jan 30, 2019 at 04:13:44PM +0100, Alexander Graf wrote:
>> Hi Jonathan,
>> 
>>> On 30.01.19 15:17, Jonathan Gray wrote:
>>> Add Raspberry Pi Compute Module 3+ to list of models, the revision code
>>> is 0x10 according to the list on raspberrypi.org.
>>> 
>>> Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
>>> ---
>>> board/raspberrypi/rpi/rpi.c | 5 +++++
>>> 1 file changed, 5 insertions(+)
>>> 
>>> diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
>>> index 153a1fdcb7..c118250740 100644
>>> --- a/board/raspberrypi/rpi/rpi.c
>>> +++ b/board/raspberrypi/rpi/rpi.c
>>> @@ -143,6 +143,11 @@ static const struct rpi_model rpi_models_new_scheme[] = {
>>>        DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
>>>        false,
>>>    },
>>> +    [0x10] = {
>>> +        "Compute Module 3+",
>>> +        DTB_DIR "bcm2837-rpi-cm3-plus.dtb",
>> 
>> Is the dtb name already committed to? I haven't seen patches on the rpi
>> kernel ML.
> 
> I didn't see an existing name in various linux trees.
> 
> There is currently no new dtb provided with the firmware either, though
> https://raw.githubusercontent.com/raspberrypi/documentation/master/hardware/computemodule/datasheets/rpi_DATA_CM3plus_1p0.pdf
> states
> 
> "CM3+ modules require a software/firmware image dated November 2018 or
> newer to function correctly."
> 
> So the firmware likely patches bcm2710-rpi-cm3.dtb before passing it on.

Or maybe it's identical to the CM3? It's supposed to be a drop in replacement after all - and the other differences (wifi chip, usb hub) of the 3+ should not apply to a CM.

So I guess either you send a patch to Linux that adds the cm3plus and only changes the compatible/model properties over cm3 or we make the dtb name in this patch the cm3 one.

Alex