linux-kernel - Re: [PATCH v4 6/7] dt-bindings: clock: rockchip: Add RK3506 clock and reset unit

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Message-ID: <24128799.6Emhk5qWAg@phil>
Date: Tue, 21 Oct 2025 10:36:53 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: mturquette@...libre.com, sboyd@...nel.org, sugar.zhang@...k-chips.com,
 zhangqing@...k-chips.com, robh@...nel.org, krzysztof.kozlowski+dt@...aro.org,
 conor+dt@...nel.org, Elaine Zhang <zhangqing@...k-chips.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-clk@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org, huangtao@...k-chips.com,
 finley.xiao@...k-chips.com
Subject:
 Re: [PATCH v4 6/7] dt-bindings: clock: rockchip: Add RK3506 clock and reset
 unit

Hi Elaine,

Am Dienstag, 21. Oktober 2025, 08:52:31 Mitteleuropäische Sommerzeit schrieb Elaine Zhang:
> From: Finley Xiao <finley.xiao@...k-chips.com>
> 
> Add device tree bindings for clock and reset unit on RK3506 SoC.
> Add clock and reset IDs for RK3506 SoC.
> 
> Signed-off-by: Finley Xiao <finley.xiao@...k-chips.com>
> ---
>  .../bindings/clock/rockchip,rk3506-cru.yaml   |  45 +++
>  .../dt-bindings/clock/rockchip,rk3506-cru.h   | 285 ++++++++++++++++++
>  .../dt-bindings/reset/rockchip,rk3506-cru.h   | 211 +++++++++++++
>  3 files changed, 541 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3506-cru.yaml
>  create mode 100644 include/dt-bindings/clock/rockchip,rk3506-cru.h
>  create mode 100644 include/dt-bindings/reset/rockchip,rk3506-cru.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3506-cru.yaml b/Documentation/devicetree/bindings/clock/rockchip,rk3506-cru.yaml
> new file mode 100644
> index 000000000000..43e192d9b2af
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/rockchip,rk3506-cru.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/rockchip,rk3506-cru.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip RK3506 Clock and Reset Unit (CRU)
> +
> +maintainers:
> +  - Finley Xiao <finley.xiao@...k-chips.com>
> +  - Heiko Stuebner <heiko@...ech.de>
> +
> +description: |
> +  The RK3506 CRU generates the clock and also implements reset for SoC
> +  peripherals.
> +
> +properties:
> +  compatible:
> +    const: rockchip,rk3506-cru
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#clock-cells":
> +    const: 1
> +
> +  "#reset-cells":
> +    const: 1
> +

I think we want clocks and clock-names properties here for xin24m
similar to the rv1126b binding (and other modern soc bindings)

Also, I think we'll need

   rockchip,grf:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
       Phandle to the syscon managing the "general register files" (GRF),
       if missing pll rates are not changeable, due to the missing pll
       lock status.

because, you're using RK3506_GRF_SOC_STATUS
for the PLL locking status.


Heiko