The reset controller driver for the TH1520 was using the generic compatible string "thead,th1520-reset". However, the controller described by this compatible only manages the resets for the Video Output (VO) subsystem.

Using a generic compatible is confusing as it implies control over all reset units on the SoC. This could lead to conflicts if support for other reset controllers on the TH1520 is added in the future like AP.

Let's introduce a new compatible string, "thead,th1520-reset-vo", to explicitly scope the controller to VO-subsystem. The old one is marked as deprecated.

Fixes: 30e7573babdc ("dt-bindings: reset: Add T-HEAD TH1520 SoC Reset Controller") Cc: stable@vger.kernel.org Reported-by: Icenowy Zheng uwu@icenowy.me Co-developed-by: Michal Wilczynski m.wilczynski@samsung.com Signed-off-by: Michal Wilczynski m.wilczynski@samsung.com Signed-off-by: Yao Zi ziyao@disroot.org --- .../bindings/reset/thead,th1520-reset.yaml | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml b/Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml index f2e91d0add7a..3930475dcc04 100644 --- a/Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml +++ b/Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml @@ -15,8 +15,11 @@ maintainers:

properties: compatible: - enum: - - thead,th1520-reset + oneOf: + - enum: + - thead,th1520-reset-vo + - const: thead,th1520-reset + deprecated: true

reg: maxItems: 1 @@ -33,12 +36,8 @@ additionalProperties: false

examples: - | - soc { - #address-cells = <2>; - #size-cells = <2>; - rst: reset-controller@ffef528000 { - compatible = "thead,th1520-reset"; - reg = <0xff 0xef528000 0x0 0x1000>; + reset-controller@ffef528000 { + compatible = "thead,th1520-reset-vo"; + reg = <0xef528000 0x1000>; #reset-cells = <1>; - }; };