diff options
| author | Benjamin Gaignard <benjamin.gaignard@collabora.com> | 2021-09-24 15:24:47 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-10-05 09:40:17 +0200 |
| commit | 51f7be81feafe31c338f95510dfbcaa29e0798d3 (patch) | |
| tree | 709fc780362cf46c0a947fb0427c9ee99c2c29cd /drivers/staging/media/hantro/hantro_g1_regs.h | |
| parent | c93beb5243750911a9a95aac31688ff85512b22e (diff) | |
media: hantro: Auto generate the AXI ID to avoid conflicts
The AXI ID is an AXI bus configuration for improve bus performance.
If read and write operations use different IDs the operations can be
paralleled, whereas when they have the same ID the operations will be
serialized. Right now, the write ID is fixed to 0 but we can set it to
0xff to get auto generated IDs to avoid possible conflicts.
This change has no functional changes, but seems reasonable to let the
hardware to autogenerate the ID instead of hardcoding in software.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/staging/media/hantro/hantro_g1_regs.h')
| -rw-r--r-- | drivers/staging/media/hantro/hantro_g1_regs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/media/hantro/hantro_g1_regs.h b/drivers/staging/media/hantro/hantro_g1_regs.h index c1756e3d5391..c623b3b0be18 100644 --- a/drivers/staging/media/hantro/hantro_g1_regs.h +++ b/drivers/staging/media/hantro/hantro_g1_regs.h @@ -68,6 +68,8 @@ #define G1_REG_DEC_CTRL0_PICORD_COUNT_E BIT(9) #define G1_REG_DEC_CTRL0_DEC_AHB_HLOCK_E BIT(8) #define G1_REG_DEC_CTRL0_DEC_AXI_WR_ID(x) (((x) & 0xff) << 0) +/* Setting AXI ID to 0xff to get auto generated ID to avoid possible conflicts */ +#define G1_REG_DEC_CTRL0_DEC_AXI_AUTO G1_REG_DEC_CTRL0_DEC_AXI_WR_ID(0xff) #define G1_REG_DEC_CTRL1 0x010 #define G1_REG_DEC_CTRL1_PIC_MB_WIDTH(x) (((x) & 0x1ff) << 23) #define G1_REG_DEC_CTRL1_MB_WIDTH_OFF(x) (((x) & 0xf) << 19) |