dt-bindings: Add a clocks property to the simple-framebuffer binding
A simple-framebuffer node represents a framebuffer setup by the firmware / bootloader. Such a framebuffer may have a number of clocks in use, add a property to communicate this to the OS. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Mike Turquette <mturquette@linaro.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Simple Framebuffer
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A simple frame-buffer describes a raw memory region that may be rendered to,
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with the assumption that the display hardware has already been set up to scan
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out from that buffer.
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A simple frame-buffer describes a frame-buffer setup by firmware or
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the bootloader, with the assumption that the display hardware has already
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been set up to scan out from the memory pointed to by the reg property.
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Required properties:
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- compatible: "simple-framebuffer"
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- r5g6b5 (16-bit pixels, d[15:11]=r, d[10:5]=g, d[4:0]=b).
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- a8b8g8r8 (32-bit pixels, d[31:24]=a, d[23:16]=b, d[15:8]=g, d[7:0]=r).
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Optional properties:
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- clocks : List of clocks used by the framebuffer. Clocks listed here
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are expected to already be configured correctly. The OS must
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ensure these clocks are not modified or disabled while the
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simple framebuffer remains active.
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Example:
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framebuffer {
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