From: Frank Li Frank.Li@nxp.com
[ Upstream commit d2db0d78154442fb89165edf8836bf2644c6c58d ]
Allow clock 'uartclk' and 'reg' for nxp,lpc1850-uart to align existed driver and dts. It is really old platform. Keep the same restriction for others.
Allow dmas and dma-names property, which allow maxItems 4 because very old platform (arch/arm/boot/dts/nxp/lpc/lpc18xx.dtsi) use duplicate "tx", "rx", "tx", "rx" as dma-names.
Fix below CHECK_DTB warnings: arch/arm/boot/dts/nxp/lpc/lpc4337-ciaa.dtb: serial@40081000 (nxp,lpc1850-uart): clock-names: ['uartclk', 'reg'] is too long
Signed-off-by: Frank Li Frank.Li@nxp.com Acked-by: "Rob Herring (Arm)" robh@kernel.org Link: https://lore.kernel.org/r/20250602142745.942568-1-Frank.Li@nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Stable-dep-of: 387d00028ccc ("dt-bindings: serial: 8250: move a constraint") Signed-off-by: Sasha Levin sashal@kernel.org --- .../devicetree/bindings/serial/8250.yaml | 41 +++++++++++++++++-- 1 file changed, 37 insertions(+), 4 deletions(-)
diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml index c6bc27709bf72..2766bb6ff2d1b 100644 --- a/Documentation/devicetree/bindings/serial/8250.yaml +++ b/Documentation/devicetree/bindings/serial/8250.yaml @@ -49,6 +49,24 @@ allOf: - required: [ clock-frequency ] - required: [ clocks ]
+ - if: + properties: + compatible: + contains: + const: nxp,lpc1850-uart + then: + properties: + clock-names: + items: + - const: uartclk + - const: reg + else: + properties: + clock-names: + items: + - const: core + - const: bus + properties: compatible: oneOf: @@ -142,9 +160,22 @@ properties:
clock-names: minItems: 1 - items: - - const: core - - const: bus + maxItems: 2 + oneOf: + - items: + - const: core + - const: bus + - items: + - const: uartclk + - const: reg + + dmas: + minItems: 1 + maxItems: 4 + + dma-names: + minItems: 1 + maxItems: 4
resets: maxItems: 1 @@ -237,7 +268,9 @@ if: properties: compatible: contains: - const: spacemit,k1-uart + enum: + - spacemit,k1-uart + - nxp,lpc1850-uart then: required: [clock-names] properties: