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Subject: [media] soc_camera: rcar_vin: add R-Car Gen 2 and 3 fallback compatibility strings Author: Yoshihiro Kaneko <[email protected]> Date: Mon Mar 14 21:40:26 2016 -0300 Add fallback compatibility string for R-Car Gen 1 and 2. In the case of Renesas R-Car hardware we know that there are generations of SoCs, e.g. Gen 2 and 3. But beyond that it's unclear what the relationship between IP blocks might be. For example, I believe that r8a7790 is older than r8a7791 but that doesn't imply that the latter is a descendant of the former or vice versa. We can, however, by examining the documentation and behaviour of the hardware at run-time observe that the current driver implementation appears to be compatible with the IP blocks on SoCs within a given generation. For the above reasons and convenience when enabling new SoCs a per-generation fallback compatibility string scheme being adopted for drivers for Renesas SoCs. Signed-off-by: Yoshihiro Kaneko <[email protected]> Signed-off-by: Simon Horman <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Guennadi Liakhovetski <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Documentation/devicetree/bindings/media/rcar_vin.txt | 11 +++++++++-- drivers/media/platform/soc_camera/rcar_vin.c | 2 ++ 2 files changed, 11 insertions(+), 2 deletions(-) --- diff --git a/Documentation/devicetree/bindings/media/rcar_vin.txt b/Documentation/devicetree/bindings/media/rcar_vin.txt index 619193ccf7ff..4266123888ed 100644 --- a/Documentation/devicetree/bindings/media/rcar_vin.txt +++ b/Documentation/devicetree/bindings/media/rcar_vin.txt @@ -5,7 +5,7 @@ The rcar_vin device provides video input capabilities for the Renesas R-Car family of devices. The current blocks are always slaves and suppot one input channel which can be either RGB, YUYV or BT656. - - compatible: Must be one of the following + - compatible: Must be one or more of the following - "renesas,vin-r8a7795" for the R8A7795 device - "renesas,vin-r8a7794" for the R8A7794 device - "renesas,vin-r8a7793" for the R8A7793 device @@ -13,6 +13,13 @@ channel which can be either RGB, YUYV or BT656. - "renesas,vin-r8a7790" for the R8A7790 device - "renesas,vin-r8a7779" for the R8A7779 device - "renesas,vin-r8a7778" for the R8A7778 device + - "renesas,rcar-gen2-vin" for a generic R-Car Gen2 compatible device. + - "renesas,rcar-gen3-vin" for a generic R-Car Gen3 compatible device. + + When compatible with the generic version nodes must list the + SoC-specific version corresponding to the platform first + followed by the generic version. + - reg: the register base and size for the device registers - interrupts: the interrupt for the device - clocks: Reference to the parent clock @@ -37,7 +44,7 @@ Device node example }; vin0: vin@0xe6ef0000 { - compatible = "renesas,vin-r8a7790"; + compatible = "renesas,vin-r8a7790", "renesas,rcar-gen2-vin"; clocks = <&mstp8_clks R8A7790_CLK_VIN0>; reg = <0 0xe6ef0000 0 0x1000>; interrupts = <0 188 IRQ_TYPE_LEVEL_HIGH>; diff --git a/drivers/media/platform/soc_camera/rcar_vin.c b/drivers/media/platform/soc_camera/rcar_vin.c index 3b8edf458964..3f9c1b8456c3 100644 --- a/drivers/media/platform/soc_camera/rcar_vin.c +++ b/drivers/media/platform/soc_camera/rcar_vin.c @@ -1845,6 +1845,8 @@ static const struct of_device_id rcar_vin_of_table[] = { { .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 }, { .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 }, { .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 }, + { .compatible = "renesas,rcar-gen3-vin", .data = (void *)RCAR_GEN3 }, + { .compatible = "renesas,rcar-gen2-vin", .data = (void *)RCAR_GEN2 }, { }, }; MODULE_DEVICE_TABLE(of, rcar_vin_of_table); _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
