> On Jun 26, 2015, at 12:00 PM, Florian Fainelli <f.fainelli@xxxxxxxxx> wrote:
>
> Le 06/25/15 01:52, Jaedon Shin a écrit :
>>
>>> On Jun 25, 2015, at 4:32 AM, Florian Fainelli <f.fainelli@xxxxxxxxx> wrote:
>>>
>>> +Brian,
>>>
>>> On 23/06/15 23:08, Jaedon Shin wrote:
>>>> Add NAND device nodes to BMIPS based BCM7346 platform.
>>>>
>>>> Signed-off-by: Jaedon Shin <jaedon.shin@xxxxxxxxx>
>>>> ---
>>>
>>> [snip]
>>>
>>>> +
>>>> +&nand0 {
>>>> + status = "okay";
>>>> +
>>>> + nandcs@1 {
>>>> + compatible = "brcm,nandcs";
>>>> + reg = <1>;
>>>> + nand-ecc-step-size = <512>;
>>>> + nand-ecc-strength = <8>;
>>>> + nand-on-flash-bbt;
>>>> +
>>>> + #size-cells = <2>;
>>>> + #address-cells = <2>;
>>>> +
>>>> + flash1.rootfs0@0 {
>>>> + reg = <0x0 0x0 0x0 0x80000000>;
>>>> + };
>>>> +
>>>> + flash1.rootfs1@80000000 {
>>>> + reg = <0x0 0x80000000 0x0 0x80000000>;
>>>> + };
>>>> + };
>>>> +};
>>>
>>> Should we create something like brcmnand-cs1-512-8 to reduce the amount
>>> of duplication between DTS files?
>>> --
>>> Florian
>>
>> I Think that is not duplication.
>>
>> I have no reference boards, but this node is maybe explaining for hardware
>> description of the BCM97346DBSMB reference board. The nodes are changed by
>> EBI CS and ECC capabilities of NAND flash. I used brcmnand-cs2-512-4 and
>> brcmnand-cs1-512-4 for others.
>
The *others* means BCM7346 based set-top box of manufacturer. they are not
bcm973XX{dbsmb,svmb} boards.
> Then I am confused, your 4 patches add identical NAND flash chip
> properties for 7346, 7358, 7360 and 7362: CS#1, 512 bytes of ECC step
> size and 8 bits of ECC strength, am I missing something?
> --
> Florian
The mips based reference boards have postfix of DBSMB, SVMB, SFF and others.
they have different properties of DDR, #CS, SPI-NOR, NOR, NAND. if we write
the DT of bcm97346sff.dts, therefore it has different fields.
Then I expected that mips 40nm based SVMB type reference boards have the same
properties. but, I don't have confidence. AISE I have no reference boards
unfortunately. if you can contact with people who have reference board, would
tell me information of #CS and NAND. --
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