Re: [PATCH] dt-bindings: media: Add bindings for Imagination E5010 JPEG Encoder driver
From: Krzysztof Kozlowski <hidden>
Date: 2023-07-26 16:33:19
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linux-media, lkml
On 26/07/2023 18:26, Devarsh Thakkar wrote:
Add dt-bindings for Imagination E5010 JPEG Encoder driver which is implemented as stateful V4L2 M2M driver. Co-developed-by: David Huang <redacted> Signed-off-by: David Huang <redacted>
A nit, subject: drop second/last, redundant "bindings for". The "dt-bindings" prefix is already stating that these are bindings. Drop also "driver". Bindings are for hardware, not drivers. Prefix starts with media and then dt-bindings.
quoted hunk ↗ jump to hunk
Signed-off-by: Devarsh Thakkar <devarsht@ti.com> --- .../bindings/media/img,e5010-jpeg-enc.yaml | 79 +++++++++++++++++++ MAINTAINERS | 5 ++ 2 files changed, 84 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/img,e5010-jpeg-enc.yamldiff --git a/Documentation/devicetree/bindings/media/img,e5010-jpeg-enc.yaml b/Documentation/devicetree/bindings/media/img,e5010-jpeg-enc.yaml new file mode 100644 index 000000000000..0060373eace7 --- /dev/null +++ b/Documentation/devicetree/bindings/media/img,e5010-jpeg-enc.yaml@@ -0,0 +1,79 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/img,e5010-jpeg-enc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Imagination E5010 JPEG Encoder + +maintainers: + - Devarsh Thakkar <devarsht@ti.com> + +description: | + The E5010 is a JPEG encoder from Imagination Technologies implemented on + TI's AM62A SoC. It is capable of real time encoding of YUV420 and YUV422 + inputs to JPEG and M-JPEG. It supports baseline JPEG Encoding up to + 8Kx8K resolution. + +properties: + compatible: + const: img,e5010-jpeg-enc
Your description suggests that this is part of TI SoC. Pretty often licensed blocks cannot be used on their own and need some customizations. Are you sure your block does not need any customization thus no dedicated compatible is needed?
+ + reg: + items: + - description: The E5010 main register region + - description: The E5010 mmu register region + + reg-names: + items: + - const: regjasper + - const: regmmu +
Drop reg from both
+ power-domains: + maxItems: 1 + + resets: + maxItems: 1 + + clocks: + minItems: 1 + maxItems: 2
You need to specify the items. Also, no variable number of clocks. Why would they vary if block is strictly defined?
+ + clock-names: + minItems: 1 + maxItems: 2
Instead list the names.
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ cbass_main {That's some weird name. Probably you meant soc. Anyway, underscores are not allowed.
+ #address-cells = <2>;
+ #size-cells = <2>;
+ e5010: e5010@fd20000 {Node names should be generic. See also an explanation and list of examples (not exhaustive) in DT specification: https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation Drop the label.
+ compatible = "img,e5010-jpeg-enc"; + reg = <0x00 0xfd20000 0x00 0x100>, + <0x00 0xfd20200 0x00 0x200>; + reg-names = "regjasper", "regmmu"; + clocks = <&k3_clks 201 0>; + clock-names = "core_clk"; + power-domains = <&k3_pds 201 TI_SCI_PD_EXCLUSIVE>; + interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; + }; + };
Best regards, Krzysztof