[PATCH v2 1/8] dt-bindings: pwm: samsung: Do not require interrupts on Exynos SoCs

Krzysztof Kozlowski
2020-07-02T15:52:00Z

The bindings required interrupts for all SoCs but actually only the PWM
timer clocksource (for S3C/S5P SoCs) was using them. This PWM timer
clocksource driver is not used on Exynos SoCs thus the interrupts can be
marked as optional.

Reported-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

---

Changes since v1:
1. New patch
---
.../devicetree/bindings/pwm/pwm-samsung.yaml | 23 +++++++++++++++----
1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml b/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml
index fc799b0577d4..188679cb8b8c 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml
+++ b/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml
@@ -18,9 +18,6 @@ description: |+

Be aware that the clocksource driver supports only uniprocessor systems.

-allOf:
- - $ref: pwm.yaml#
-
properties:
compatible:
enum:
@@ -63,7 +60,8 @@ properties:

interrupts:
description:
- One interrupt per timer, starting at timer 0.
+ One interrupt per timer, starting at timer 0. Necessary only for SoCs which
+ use PWM clocksource.
minItems: 1
maxItems: 5

@@ -88,12 +86,27 @@ required:
- clocks
- clock-names
- compatible
- - interrupts
- "#pwm-cells"
- reg

additionalProperties: false

+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,s3c2410-pwm
+ - samsung,s3c6400-pwm
+ - samsung,s5p6440-pwm
+ - samsung,s5pc100-pwm
+ then:
+ required:
+ - interrupts
+
examples:
- |
pwm@7f006000 {
--
2.17.1