Re: [PATCH 01/16] dt-bindings: mfd: rohm, bd71847-pmic: Correct clock properties requirements
From: Vaittinen, Matti <hidden>
Date: 2020-08-25 06:23:50
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Hello Krzysztof, On Mon, 2020-08-24 at 21:06 +0200, Krzysztof Kozlowski wrote:
The input clock and number of clock provider cells are not required for the PMIC to operate. They are needed only for the optional bd718x7 clock driver.
I have always found the DT bindings hard to do. I quite often end up having a different view with Rob so I probably could just shut-up and watch how this evolves :) But as keeping my mouth is so difficult... ...All of the drivers are optional. The PMIC can power-on without any drivers. Drivers are mostly used just for disabling the voltage from graphics accelerator block when it is not needed (optional). Or some DVS (optional). But yes, maybe the clk driver is "more optional" than the rest. XD So, I am not against this.
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Add also clock-output-names as driver takes use of it. This fixes dtbs_check warnings like: arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dt.yaml: pmic@4b: 'clocks' is a required property arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dt.yaml: pmic@4b: '#clock-cells' is a required property Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> --- .../devicetree/bindings/mfd/rohm,bd71847-pmic.yaml | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd71847- pmic.yaml index 77bcca2d414f..5d531051a153 100644--- a/Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml +++ b/Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml@@ -38,6 +38,9 @@ properties: "#clock-cells": const: 0 + clock-output-names: + maxItems: 1
I had this in original binding (text) document patch series. For some reason it was later dropped. Unfortunately I didn't easily find a reason as to why. Adding it back now is absolutely fine for me though.
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+ # The BD71847 abd BD71850 support two different HW states as reset target # states. States are called as SNVS and READY. At READY state all the PMIC # power outputs go down and OTP is reload. At the SNVS state all other logic@@ -116,12 +119,14 @@ required: - compatible - reg - interrupts - - clocks - - "#clock-cells" - regulators additionalProperties: false +dependencies: + '#clock-cells': [clocks] + clocks: ['#clock-cells']
This is new to me. Please educate me - does this simply mean that if '#clock-cells' is given, then also the 'clocks' must be given - and the other way around? If so, then: Acked-By: Matti Vaittinen <redacted> -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC K iviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. "non cogito me" dixit Rene Descarte, deinde evanescavit (Thanks for the translation Simon) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel