linux-kernel - Re: [PATCH v4 1/2] dt-bindings: phy: Add Rockchip MIPI C-/D-PHY schema

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Message-ID: <2213231.Mh6RI2rZIc@diego>
Date: Tue, 26 Nov 2024 19:38:35 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Conor Dooley <conor@...nel.org>
Cc: vkoul@...nel.org, kishon@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, quentin.schulz@...rry.de,
 sebastian.reichel@...labora.com, linux-phy@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
 dse@...umatec.com, Heiko Stuebner <heiko.stuebner@...rry.de>
Subject:
 Re: [PATCH v4 1/2] dt-bindings: phy: Add Rockchip MIPI C-/D-PHY schema

Hey Conor,

Am Dienstag, 26. November 2024, 18:44:14 CET schrieb Conor Dooley:
> On Tue, Nov 26, 2024 at 02:17:34PM +0100, Heiko Stuebner wrote:
> > From: Heiko Stuebner <heiko.stuebner@...rry.de>
> > 
> > Add dt-binding schema for the MIPI C-/D-PHY found on
> > Rockchip RK3588 SoCs.
> > 
> > Tested-by: Daniel Semkowicz <dse@...umatec.com>
> > Tested-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> > Signed-off-by: Heiko Stuebner <heiko.stuebner@...rry.de>
> > ---
> >  .../phy/rockchip,rk3588-mipi-dcphy.yaml       | 87 +++++++++++++++++++
> >  1 file changed, 87 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> > new file mode 100644
> > index 000000000000..c8ff5ba22a86
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> > @@ -0,0 +1,87 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/phy/rockchip,rk3588-mipi-dcphy.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Rockchip MIPI D-/C-PHY with Samsung IP block
> > +
> > +maintainers:
> > +  - Guochun Huang <hero.huang@...k-chips.com>
> > +  - Heiko Stuebner <heiko@...ech.de>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - rockchip,rk3576-mipi-dcphy
> > +      - rockchip,rk3588-mipi-dcphy
> 
> How many phys do each of these SoCs have?

- rk3588 has two - each with a separate GRF for additional settings [0]
- rk3576 has one


Heiko

[0] https://lore.kernel.org/lkml/D5F5C1RWVHG5.TSHPO29TXYEF@cknow.org/T/
The register layout in each GRF area is identical, but each DC-PHY gets
its own separate GRF io-mem block.