Re: [PATCH v3 4/8] phy: rockchip-usb: add compatible values for rk3066a and rk3188
From: Doug Anderson
Date: Thu Nov 19 2015 - 19:32:29 EST
On Thu, Nov 19, 2015 at 1:22 PM, Heiko Stuebner <heiko@xxxxxxxxx> wrote:
> We need custom handling for these two socs in the driver shortly,
> so add the necessary compatible values to binding and driver.
> Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
> Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt | 5 ++++-
> drivers/phy/phy-rockchip-usb.c | 2 ++
> 2 files changed, 6 insertions(+), 1 deletion(-)
> diff --git a/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
> index 826454a..9b37242 100644
> --- a/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
> +++ b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
> @@ -1,7 +1,10 @@
> ROCKCHIP USB2 PHY
> Required properties:
> - - compatible: rockchip,rk3288-usb-phy
> + - compatible: matching the soc type, one of
> + "rockchip,rk3066a-usb-phy"
> + "rockchip,rk3188-usb-phy"
> + "rockchip,rk3288-usb-phy"
I can never quite keep it straight how this is supposed to work, but
since previously only "rockchip,rk3288-usb-phy" was supported and now
we have these new compatible strings, I would have expected the new
strings to specify the old ones as fallback. That would mean your
choices would be:
- "rockchip,rk3288-usb-phy" - A real rk3288
- "rockchip,rk3188-usb-phy", "rockchip,rk3288-usb-phy" - A rk3188 with
fallback to 3288 driver.
- "rockchip,rk3066a-usb-phy", "rockchip,rk3288-usb-phy" - A rk3066a
with fallback to 3288 driver.
That means that if you land the dts changes without the driver changes
that things still work OK.
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