[PATCH v5 0/6] bcm2835: auxiliar device support for spi
alexanders83 at web.de
Wed Sep 9 02:00:43 PDT 2015
On Tuesday 08 September 2015 18:48:07, Eric Anholt wrote:
> I finally had a chance to sit down and look at what the hardware's doing
> with the enable bit (also, I've read a whole lot more of the hardware
> now, so I'm a lot faster at answering questions like this). The enable
> bits are a clock gate off of the VPU clock.
Are any hardware documents about such things available (in public)?
> I knocked together the enable bits as a clock gate driver, since I'd
> just written very similar code for the audio domain clock driver (and I
> assume you are grumpy about how much time you've spent on this one
> stupid register). It's up at
> https://github.com/anholt/linux/tree/bcm2835-clock-aux and I can submit
> it if you like the result. I've compile tested it only, but I'm hoping
> you could just drop your aux SPI driver on top of it and have things
IMHO line 45 (https://github.com/anholt/linux/commit/facb4ba917a1b9f6c2ee0cea7d529acf55f584dd#diff-1b6f753c132811b3f6d70f5b31866950R45) should be like this
> onecell->clks = kzalloc(sizeof(*onecell->clks) * BCM2835_AUX_CLOCK_COUNT, GFP_KERNEL);
or you will only allocate a single struct clk*.
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