Subject: [PATCH 3/4] ARM/dts: omap5: Update UART with address space and interrupts

From: [email-masked] (Sourav)
Date: Mon, 22 Oct 2012 19:25:22 +0530

Hi Sebestien,
On Monday 22 October 2012 06:26 PM, Sourav wrote:
> On Monday 22 October 2012 06:20 PM, Benoit Cousson wrote:
>> On 10/22/2012 02:27 PM, Sourav wrote:
>>> Hi Benoit,
>>> On Monday 22 October 2012 05:37 PM, Benoit Cousson wrote:
>>>> On 10/22/2012 01:57 PM, Benoit Cousson wrote:
>>>>> Hi Sourav,
>>>>>
>>>>> On 10/22/2012 01:16 PM, Sourav wrote:
>>>>>> Hi Sebastien,
>>>>>> On Monday 22 October 2012 03:52 PM, Sebastien Guiriec wrote:
>>>>>>> Add base address and interrupt line inside Device Tree data for
>>>>>> Incomplete sentence!
>>>>>>> Signed-off-by: Sebastien Guiriec <[email-masked]>
>>>>>>> ---
>>>>>>>     arch/arm/boot/dts/omap5.dtsi |   16 ++++++++++++++--
>>>>>>>     1 file changed, 14 insertions(+), 2 deletions(-)
>>>>>>>
>>>>>>> diff --git a/arch/arm/boot/dts/omap5.dtsi
>>>>>>> b/arch/arm/boot/dts/omap5.dtsi
>>>>>>> index 6c22e1b..413df94 100644
>>>>>>> --- a/arch/arm/boot/dts/omap5.dtsi
>>>>>>> +++ b/arch/arm/boot/dts/omap5.dtsi
>>>>>>> @@ -237,36 +237,48 @@
>>>>>>>               uart1: serial at 4806a000 {
>>>>>>>                 compatible = "ti,omap4-uart";
>>>>>>> +            reg = <0x4806a000 0x100>;
>>>>>>> +            interrupts = <0 72 0x4>;
>>>>>>>                 ti,hwmods = "uart1";
>>>>>>>                 clock-frequency = <48000000>;
>>>>>>>             };
>>>>>>>               uart2: serial at 4806c000 {
>>>>>>>                 compatible = "ti,omap4-uart";
>>>>>>> +            reg = <0x4806c000 0x100>;
>>>>>>> +            interrupts = <0 73 0x4>;
>>>>>>>                 ti,hwmods = "uart2";
>>>>>>>                 clock-frequency = <48000000>;
>>>>>>>             };
>>>>>>>               uart3: serial at 48020000 {
>>>>>>>                 compatible = "ti,omap4-uart";
>>>>>>> +            reg = <0x48020000 0x100>;
>>>>>>> +            interrupts = <0 74 0x4>;
>>>>>>>                 ti,hwmods = "uart3";
>>>>>>>                 clock-frequency = <48000000>;
>>>>>>>             };
>>>>>>>               uart4: serial at 4806e000 {
>>>>>>>                 compatible = "ti,omap4-uart";
>>>>>>> +            reg = <0x4806e000 0x100>;
>>>>>>> +            interrupts = <0 70 0x4>;
>>>>>>>                 ti,hwmods = "uart4";
>>>>>>>                 clock-frequency = <48000000>;
>>>>>>>             };
>>>>>>>               uart5: serial at 48066000 {
>>>>>>> -            compatible = "ti,omap5-uart";
>>>>>>> +            compatible = "ti,omap4-uart";
>>>>>>> +            reg = <0x48066000 0x100>;
>>>>>>> +            interrupts = <0 105 0x4>;
>>>>>> In Omap5 TRM, the interrupt number mentioned for uart5 is 138. 
>>>>>> How is
>>>>>> 105 coming?
>>>>> It is from hwmod and thus from the HW spec. It looks like the TRM is
>>>>> wrong... or the HW spec :-)
>>>>>
>>>>>>>                 ti,hwmods = "uart5";
>>>>>>>                 clock-frequency = <48000000>;
>>>>>>>             };
>>>>>>>               uart6: serial at 48068000 {
>>>>>>> -            compatible = "ti,omap6-uart";
>>>>>>> +            compatible = "ti,omap4-uart";
>>>>>>> +            reg = <0x48068000 0x100>;
>>>>>>> +            interrupts = <0 106 0x4>;
>>>>>> Same here, TRM shows this number to be 139 ?
>>>> In fact, even the TRM (ES1.0 NDA vM) is aligned with these data.
>>>> Where did you see 138 and 139?
>>> I looked at Page 6300 of the above TRM, Figure 24-60. Is this place not
>>> correct to look
>>> up for these data?
>> Nope. Well it should be accurate but since it is a diagram, it does not
>> necessarily reflect the latest integration data like IRQ line.
>>
>> You'd better use the table that list all the IRQ per CPU:
>>
>> 18.3.2 Interrupt Requests to INTC_MPU
> Ahh. True. The table does show the numbers to be 105 and 106.
> Thanks for the pointer.
>
> ~Sourav
>> Regards,
>> Benoit
>>
>
After fixing the minor comment on the commit log, you can add

Acked-by: Sourav Poddar <[email-masked]>

>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel