From 2215cb3be5c28a1fd43036550c00c2371aeeba95 Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Tue, 1 Nov 2022 17:46:15 +0100 Subject: drm: lcdif: change burst size to 256B If a axi bus master with a higher priority do a lot of memory access FIFO underruns can be inspected. Increase the burst size to 256B to avoid such underruns and to improve the memory access efficiency. Fixes: 9db35bb349a0 ("drm: lcdif: Add support for i.MX8MP LCDIF variant") Signed-off-by: Marco Felsch Reviewed-by: Marek Vasut Signed-off-by: Marek Vasut Link: https://patchwork.freedesktop.org/patch/msgid/20221101164615.778299-1-m.felsch@pengutronix.de --- drivers/gpu/drm/mxsfb/lcdif_regs.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu/drm/mxsfb/lcdif_regs.h') diff --git a/drivers/gpu/drm/mxsfb/lcdif_regs.h b/drivers/gpu/drm/mxsfb/lcdif_regs.h index 2d3920b8371e..fb74eb5ccbf1 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_regs.h +++ b/drivers/gpu/drm/mxsfb/lcdif_regs.h @@ -190,6 +190,10 @@ #define CTRLDESCL0_1_WIDTH(n) ((n) & 0xffff) #define CTRLDESCL0_1_WIDTH_MASK GENMASK(15, 0) +#define CTRLDESCL0_3_P_SIZE(n) (((n) << 20) & CTRLDESCL0_3_P_SIZE_MASK) +#define CTRLDESCL0_3_P_SIZE_MASK GENMASK(22, 20) +#define CTRLDESCL0_3_T_SIZE(n) (((n) << 16) & CTRLDESCL0_3_T_SIZE_MASK) +#define CTRLDESCL0_3_T_SIZE_MASK GENMASK(17, 16) #define CTRLDESCL0_3_PITCH(n) ((n) & 0xffff) #define CTRLDESCL0_3_PITCH_MASK GENMASK(15, 0) -- cgit