linux-kernel - Re: [PATCH v2 0/2] leds: bcm63x8: improve read and write functions

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Message-Id: <B9E7BB0F-00E7-40CC-9571-E17E574E1C3F@gmail.com>
Date:   Wed, 24 Feb 2021 16:54:29 +0100
From:   Álvaro Fernández Rojas <noltari@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Jonas Gorski <jonas.gorski@...il.com>, Pavel Machek <pavel@....cz>,
        Dan Murphy <dmurphy@...com>, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] leds: bcm63x8: improve read and write functions

Hi Florian,

> El 24 feb 2021, a las 16:45, Florian Fainelli <f.fainelli@...il.com> escribió:
> 
> 
> 
> On 2/24/2021 2:11 AM, Álvaro Fernández Rojas wrote:
>> This code is proven to work in BMIPS BE/LE and ARM BE/LE.
>> See bcm2835-rng and bcmgenet.c:
>> https://github.com/torvalds/linux/blob/3b9cdafb5358eb9f3790de2f728f765fef100731/drivers/char/hw_random/bcm2835-rng.c#L42-L60
>> https://github.com/torvalds/linux/blob/3b9cdafb5358eb9f3790de2f728f765fef100731/drivers/net/ethernet/broadcom/genet/bcmgenet.c#L71-L88
> 
> What is the motivation for doing this? bcm2835-rng and bcmgenet are used
> across MIPS and ARM platforms therefore they need to be compatible with
> both, but these two LEDs drivers are super specialized, are you working
> on porting the 6328 LED driver to the newer ARM-based DSL SoCs such as
> 63138 and 63148?

I just wanted to have all bmips drivers in line (at least regarding read/write).
If I remember correctly someone told me that this controller was also present on some little endian SoCs, but you can confirm that :).
Unfortunately I haven’t got any devices with ARM-based DSL SoCs, so the answer is no.

> -- 
> Florian

Best regards,
Álvaro.