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drm/rcar-du: dsi: Document TXVMSETR PIXWDTH as bitfield

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The register TXVMSETR bitfield PIXWDTH is not a single bit, but a
bitfield. Add a MASK macro and document that the only allowed value
that can ever be written into the bitfield is the current value, 1.
No functional change.

Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Link: https://patch.msgid.link/20251028232959.109936-3-marek.vasut+renesas@mailbox.org
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
This commit is contained in:
Marek Vasut 2025-10-29 00:28:12 +01:00 committed by Tomi Valkeinen
parent 42bbf82b73
commit 4723455e4b
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h
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@ -143,7 +143,8 @@
#define TXVMSETR_SYNSEQ_PULSES (0 << 16)
#define TXVMSETR_SYNSEQ_EVENTS (1 << 16)
#define TXVMSETR_VSTPM (1 << 15)
#define TXVMSETR_PIXWDTH (1 << 8)
#define TXVMSETR_PIXWDTH_MASK (7 << 8)
#define TXVMSETR_PIXWDTH (1 << 8) /* Only allowed value */
#define TXVMSETR_VSEN_EN (1 << 4)
#define TXVMSETR_VSEN_DIS (0 << 4)
#define TXVMSETR_HFPBPEN_EN (1 << 2)