Re: [linux-sunxi] [PATCH 2/5] pwm: sun4i: Add support for PWM controller on sun6i SoCs
From: Maxime Ripard
Date: Fri Oct 14 2016 - 09:22:56 EST
On Wed, Oct 12, 2016 at 03:30:07PM +0800, Chen-Yu Tsai wrote:
> On Wed, Oct 12, 2016 at 12:20 PM, Icenowy Zheng <icenowy@xxxxxxxx> wrote:
> > The PWM controller in A31 is different with other Allwinner SoCs, with a
> > control register per channel (in other SoCs the control register is
> > shared), and each channel are allocated 16 bytes of address (but only 8
> > bytes are used.). The register map in one channel is just like a
> > single-channel A10 PWM controller, however, A31 have a different
> > prescaler table than other SoCs.
> > In order to use the driver for all 4 channels, device nodes should be
> > created per channel.
> I think Maxime wants you to support the different register offsets
> in this driver, and have all 4 channels in the same device (node).
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
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