From: Marek Vasut Date: Wed, 22 Apr 2026 23:36:27 +0000 (+0200) Subject: dt-bindings: clock: renesas,cpg-clocks: Document ZT/ZTR trace clock on R-Mobile A1 X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=c9c008754abd66d48cb04a9045cc12714ce2d720;p=thirdparty%2Flinux.git dt-bindings: clock: renesas,cpg-clocks: Document ZT/ZTR trace clock on R-Mobile A1 Document the ZT trace bus and ZTR trace clocks on R-Mobile A1. These clocks supply the coresight tracing modules, PTM, TPIU, ETB and replicator. Without these clocks, coresight tracing can not be operated. While this does change the ABI, it does so by extending the existing clock-output-names, therefore if old software is used with new DT, the coresight tracing parts will likely fail to probe, otherwise if new software is used with an old DT, there is no impact. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Marek Vasut Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20260422233744.149872-2-marek.vasut+renesas@mailbox.org Signed-off-by: Geert Uytterhoeven --- diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-clocks.yaml b/Documentation/devicetree/bindings/clock/renesas,cpg-clocks.yaml index a0e09b7002f07..925ed35d6658a 100644 --- a/Documentation/devicetree/bindings/clock/renesas,cpg-clocks.yaml +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-clocks.yaml @@ -41,7 +41,7 @@ properties: clock-output-names: minItems: 3 - maxItems: 17 + maxItems: 19 renesas,mode: description: Board-specific settings of the MD_CK* bits on R-Mobile A1 @@ -123,6 +123,8 @@ allOf: - const: zb - const: m3 - const: cp + - const: ztr + - const: zt required: - renesas,mode @@ -240,6 +242,6 @@ examples: #clock-cells = <1>; clock-output-names = "system", "pllc0", "pllc1", "pllc2", "r", "usb24s", "i", "zg", "b", "m1", "hp", "hpp", - "usbp", "s", "zb", "m3", "cp"; + "usbp", "s", "zb", "m3", "cp", "ztr", "zt"; renesas,mode = <0x05>; }; diff --git a/include/dt-bindings/clock/r8a7740-clock.h b/include/dt-bindings/clock/r8a7740-clock.h index 1b3fdb39cc426..8a8816b2ff6ac 100644 --- a/include/dt-bindings/clock/r8a7740-clock.h +++ b/include/dt-bindings/clock/r8a7740-clock.h @@ -24,6 +24,8 @@ #define R8A7740_CLK_ZB 14 #define R8A7740_CLK_M3 15 #define R8A7740_CLK_CP 16 +#define R8A7740_CLK_ZTR 17 +#define R8A7740_CLK_ZT 18 /* MSTP1 */ #define R8A7740_CLK_CEU21 28