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boundary="===============8645145379637304805==" Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org --===============8645145379637304805== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="NO7UUlGWjKuFSfWY" Content-Disposition: inline --NO7UUlGWjKuFSfWY Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Sep 27, 2026 at 04:28:15PM +0200, Ronald Claveau via B4 Relay wrote: > From: Ronald Claveau >=20 > The T7, A1, C3, and S4 PWM controllers have a system clock in > addition to the two input clocks of channels A and B. >=20 > The channel clocks are acquired by index in the pwm driver, > where the core clock is fetched by name, with optional get > which is silent when not provided. >=20 > Require clock-names and minimum 3 items for S4, and devices > which fallback to S4, where the PWM devices do not work > without all 3 clocks. >=20 > Add an example showing T7 usage with its fallback to > amlogic,meson-s4-pwm. >=20 > Signed-off-by: Ronald Claveau > --- > .../devicetree/bindings/pwm/pwm-amlogic.yaml | 21 +++++++++++++++= +++--- > 1 file changed, 18 insertions(+), 3 deletions(-) >=20 > diff --git a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml b/Doc= umentation/devicetree/bindings/pwm/pwm-amlogic.yaml > index c337d85da40f1..e9cd5f1fdf264 100644 > --- a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml > +++ b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml > @@ -62,7 +62,7 @@ properties: > =20 > clock-names: > minItems: 1 > - maxItems: 2 > + maxItems: 3 > =20 > power-domains: > maxItems: 1 > @@ -143,9 +143,15 @@ allOf: > items: > - description: input clock of PWM channel A > - description: input clock of PWM channel B > - clock-names: false > + - description: gate clock for the PWM controller > + clock-names: > + items: > + - const: channel-a > + - const: channel-b > + - const: core > required: > - clocks > + - clock-names > =20 > - if: > properties: > @@ -179,6 +185,15 @@ examples: > pwm@1000 { > compatible =3D "amlogic,meson-s4-pwm"; > reg =3D <0x1000 0x10>; > - clocks =3D <&pwm_src_a>, <&pwm_src_b>; > + clocks =3D <&pwm_src_a>, <&pwm_src_b>, <&pwm_src_core>; > + clock-names =3D "channel-a", "channel-b", "core"; > + #pwm-cells =3D <3>; > + }; > + - | > + pwm@60000 { If you respin, drop the second example please, since it doesn't actually do anything different anymore. Acked-by: Conor Dooley pw-bot: not-applicable > + compatible =3D "amlogic,t7-pwm", "amlogic,meson-s4-pwm"; > + reg =3D <0x60000 0x24>; > + clocks =3D <&channel_a>, <&channel_b>, <&core>; > + clock-names =3D "channel-a", "channel-b", "core"; > #pwm-cells =3D <3>; > }; >=20 > --=20 > 2.49.0 >=20 >=20 --NO7UUlGWjKuFSfWY Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCarqZ5wAKCRB4tDGHoIJi 0ok+APwNheWAYEM9WF+sBQYkU6EVCY1bbe9VWk1PlHlrguTn7QD/byNsbcsFBPVx UFNlan7GYFGIaWMoGbPggPiiF1g1jwk= =Zdvc -----END PGP SIGNATURE----- --NO7UUlGWjKuFSfWY-- --===============8645145379637304805== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic --===============8645145379637304805==--