* [PATCH 0/3] drm: remove unneeded 'fast_io' parameter in regmap_config
@ 2026-07-05 16:35 ` Wolfram Sang
0 siblings, 0 replies; 11+ messages in thread
From: Wolfram Sang @ 2026-07-05 16:35 UTC (permalink / raw)
To: linux-kernel
Cc: Wolfram Sang, Andrzej Hajda, Andy Yan, David Airlie, dri-devel,
Fabio Estevam, Frank Li, Heiko Stübner, imx, Jernej Skrabec,
Jonas Karlman, Laurent Pinchart, linux-arm-kernel, linux-rockchip,
Liu Ying, Luca Ceresoli, Maarten Lankhorst, Maxime Ripard,
Neil Armstrong, Pengutronix Kernel Team, Philipp Zabel,
Robert Foss, Sandy Huang, Sascha Hauer, Simona Vetter,
Thomas Zimmermann
When using MMIO with regmap, fast_io is implied. No need to set it
again. No dependencies, can be applied directly to the subsystem tree.
Buildbot is happy, too.
Wolfram Sang (3):
drm/bridge: remove unneeded 'fast_io' parameter in regmap_config
drm/imx: remove unneeded 'fast_io' parameter in regmap_config
drm/rockchip: remove unneeded 'fast_io' parameter in regmap_config
drivers/gpu/drm/bridge/synopsys/dw-dp.c | 1 -
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c | 1 -
drivers/gpu/drm/imx/dc/dc-cf.c | 1 -
drivers/gpu/drm/imx/dc/dc-de.c | 1 -
drivers/gpu/drm/imx/dc/dc-ed.c | 2 --
drivers/gpu/drm/imx/dc/dc-fg.c | 1 -
drivers/gpu/drm/imx/dc/dc-fl.c | 1 -
drivers/gpu/drm/imx/dc/dc-fw.c | 2 --
drivers/gpu/drm/imx/dc/dc-ic.c | 1 -
drivers/gpu/drm/imx/dc/dc-lb.c | 2 --
drivers/gpu/drm/imx/dc/dc-tc.c | 1 -
drivers/gpu/drm/imx/ipuv3/imx-tve.c | 2 --
drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c | 1 -
13 files changed, 17 deletions(-)
--
2.51.0
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH 1/3] drm/bridge: remove unneeded 'fast_io' parameter in regmap_config
2026-07-05 16:35 ` Wolfram Sang
(?)
@ 2026-07-05 16:35 ` Wolfram Sang
-1 siblings, 0 replies; 11+ messages in thread
From: Wolfram Sang @ 2026-07-05 16:35 UTC (permalink / raw)
To: linux-kernel
Cc: Wolfram Sang, Andy Yan, Andrzej Hajda, Neil Armstrong,
Robert Foss, Laurent Pinchart, Jonas Karlman, Jernej Skrabec,
Luca Ceresoli, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann, David Airlie, Simona Vetter, dri-devel
When using MMIO with regmap, fast_io is implied. No need to set it
again.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
No dependencies, can be applied directly to the subsystem tree. Buildbot is
happy, too.
drivers/gpu/drm/bridge/synopsys/dw-dp.c | 1 -
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c | 1 -
2 files changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-dp.c b/drivers/gpu/drm/bridge/synopsys/dw-dp.c
index 21541be094c4..d6907a97c7f5 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-dp.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-dp.c
@@ -1949,7 +1949,6 @@ static const struct regmap_config dw_dp_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.max_register = DW_DP_MAX_REGISTER,
.rd_table = &dw_dp_readable_table,
};
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c
index b2a022d266d9..6b3de2b5ac80 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c
@@ -907,7 +907,6 @@ static const struct regmap_config dw_mipi_dsi2_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
- .fast_io = true,
};
static struct dw_mipi_dsi2 *
--
2.51.0
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH 2/3] drm/imx: remove unneeded 'fast_io' parameter in regmap_config
2026-07-05 16:35 ` Wolfram Sang
(?)
(?)
@ 2026-07-05 16:35 ` Wolfram Sang
2026-07-15 8:05 ` Liu Ying
-1 siblings, 1 reply; 11+ messages in thread
From: Wolfram Sang @ 2026-07-05 16:35 UTC (permalink / raw)
To: linux-kernel
Cc: Wolfram Sang, Liu Ying, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann, David Airlie, Simona Vetter, Frank Li,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
Philipp Zabel, dri-devel, imx, linux-arm-kernel
When using MMIO with regmap, fast_io is implied. No need to set it
again.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
No dependencies, can be applied directly to the subsystem tree. Buildbot is
happy, too.
drivers/gpu/drm/imx/dc/dc-cf.c | 1 -
drivers/gpu/drm/imx/dc/dc-de.c | 1 -
drivers/gpu/drm/imx/dc/dc-ed.c | 2 --
drivers/gpu/drm/imx/dc/dc-fg.c | 1 -
drivers/gpu/drm/imx/dc/dc-fl.c | 1 -
drivers/gpu/drm/imx/dc/dc-fw.c | 2 --
drivers/gpu/drm/imx/dc/dc-ic.c | 1 -
drivers/gpu/drm/imx/dc/dc-lb.c | 2 --
drivers/gpu/drm/imx/dc/dc-tc.c | 1 -
drivers/gpu/drm/imx/ipuv3/imx-tve.c | 2 --
10 files changed, 14 deletions(-)
diff --git a/drivers/gpu/drm/imx/dc/dc-cf.c b/drivers/gpu/drm/imx/dc/dc-cf.c
index 2f077161e912..6431ecd442c9 100644
--- a/drivers/gpu/drm/imx/dc/dc-cf.c
+++ b/drivers/gpu/drm/imx/dc/dc-cf.c
@@ -45,7 +45,6 @@ static const struct regmap_config dc_cf_cfg_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_cf_regmap_access_table,
.rd_table = &dc_cf_regmap_access_table,
.max_register = CONSTANTCOLOR,
diff --git a/drivers/gpu/drm/imx/dc/dc-de.c b/drivers/gpu/drm/imx/dc/dc-de.c
index 5a3125596fdf..7a93dda20c59 100644
--- a/drivers/gpu/drm/imx/dc/dc-de.c
+++ b/drivers/gpu/drm/imx/dc/dc-de.c
@@ -37,7 +37,6 @@ static const struct regmap_config dc_de_top_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_de_regmap_access_table,
.rd_table = &dc_de_regmap_access_table,
.max_register = POLARITYCTRL,
diff --git a/drivers/gpu/drm/imx/dc/dc-ed.c b/drivers/gpu/drm/imx/dc/dc-ed.c
index d42f33d6f3fc..bde6173615eb 100644
--- a/drivers/gpu/drm/imx/dc/dc-ed.c
+++ b/drivers/gpu/drm/imx/dc/dc-ed.c
@@ -77,7 +77,6 @@ static const struct regmap_config dc_ed_pec_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_ed_pec_regmap_write_table,
.rd_table = &dc_ed_pec_regmap_read_table,
.volatile_table = &dc_ed_pec_regmap_volatile_table,
@@ -99,7 +98,6 @@ static const struct regmap_config dc_ed_cfg_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_ed_regmap_access_table,
.rd_table = &dc_ed_regmap_access_table,
.max_register = CONTROL,
diff --git a/drivers/gpu/drm/imx/dc/dc-fg.c b/drivers/gpu/drm/imx/dc/dc-fg.c
index 28f372be9247..fdf5bc34554d 100644
--- a/drivers/gpu/drm/imx/dc/dc-fg.c
+++ b/drivers/gpu/drm/imx/dc/dc-fg.c
@@ -122,7 +122,6 @@ static const struct regmap_config dc_fg_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_fg_regmap_write_table,
.rd_table = &dc_fg_regmap_read_table,
.max_register = FGCHSTATCLR,
diff --git a/drivers/gpu/drm/imx/dc/dc-fl.c b/drivers/gpu/drm/imx/dc/dc-fl.c
index 3ce24c72aa13..003476ac2fa1 100644
--- a/drivers/gpu/drm/imx/dc/dc-fl.c
+++ b/drivers/gpu/drm/imx/dc/dc-fl.c
@@ -49,7 +49,6 @@ static const struct regmap_config dc_fl_cfg_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_fl_regmap_access_table,
.rd_table = &dc_fl_regmap_access_table,
.max_register = FRAMEDIMENSIONS,
diff --git a/drivers/gpu/drm/imx/dc/dc-fw.c b/drivers/gpu/drm/imx/dc/dc-fw.c
index acb2d4d9e2ec..96bc3c7c8f9b 100644
--- a/drivers/gpu/drm/imx/dc/dc-fw.c
+++ b/drivers/gpu/drm/imx/dc/dc-fw.c
@@ -51,7 +51,6 @@ static const struct regmap_config dc_fw_pec_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_fw_pec_regmap_access_table,
.rd_table = &dc_fw_pec_regmap_access_table,
.max_register = PIXENGCFG_DYNAMIC,
@@ -72,7 +71,6 @@ static const struct regmap_config dc_fw_cfg_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_fw_regmap_access_table,
.rd_table = &dc_fw_regmap_access_table,
.max_register = CONTROL,
diff --git a/drivers/gpu/drm/imx/dc/dc-ic.c b/drivers/gpu/drm/imx/dc/dc-ic.c
index a270ae4030cd..f1c371a95cae 100644
--- a/drivers/gpu/drm/imx/dc/dc-ic.c
+++ b/drivers/gpu/drm/imx/dc/dc-ic.c
@@ -76,7 +76,6 @@ static const struct regmap_config dc_ic_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_ic_regmap_write_table,
.rd_table = &dc_ic_regmap_read_table,
.volatile_table = &dc_ic_regmap_volatile_table,
diff --git a/drivers/gpu/drm/imx/dc/dc-lb.c b/drivers/gpu/drm/imx/dc/dc-lb.c
index ca1d714c8d6e..4f5c15833efa 100644
--- a/drivers/gpu/drm/imx/dc/dc-lb.c
+++ b/drivers/gpu/drm/imx/dc/dc-lb.c
@@ -92,7 +92,6 @@ static const struct regmap_config dc_lb_pec_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_lb_pec_regmap_access_table,
.rd_table = &dc_lb_pec_regmap_access_table,
.max_register = PIXENGCFG_DYNAMIC,
@@ -112,7 +111,6 @@ static const struct regmap_config dc_lb_cfg_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_lb_regmap_access_table,
.rd_table = &dc_lb_regmap_access_table,
.max_register = POSITION,
diff --git a/drivers/gpu/drm/imx/dc/dc-tc.c b/drivers/gpu/drm/imx/dc/dc-tc.c
index 0bfd381b2cea..54b56dadbe36 100644
--- a/drivers/gpu/drm/imx/dc/dc-tc.c
+++ b/drivers/gpu/drm/imx/dc/dc-tc.c
@@ -44,7 +44,6 @@ static const struct regmap_config dc_tc_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .fast_io = true,
.wr_table = &dc_tc_regmap_access_table,
.rd_table = &dc_tc_regmap_access_table,
.max_register = MAPBIT31_28,
diff --git a/drivers/gpu/drm/imx/ipuv3/imx-tve.c b/drivers/gpu/drm/imx/ipuv3/imx-tve.c
index e861b8b9d8fa..cb09c3f23312 100644
--- a/drivers/gpu/drm/imx/ipuv3/imx-tve.c
+++ b/drivers/gpu/drm/imx/ipuv3/imx-tve.c
@@ -460,8 +460,6 @@ static struct regmap_config tve_regmap_config = {
.readable_reg = imx_tve_readable_reg,
- .fast_io = true,
-
.max_register = 0xdc,
};
--
2.51.0
^ permalink raw reply related [flat|nested] 11+ messages in thread* Re: [PATCH 0/3] drm: remove unneeded 'fast_io' parameter in regmap_config
2026-07-05 16:35 ` Wolfram Sang
@ 2026-07-14 14:30 ` Luca Ceresoli
-1 siblings, 0 replies; 11+ messages in thread
From: Luca Ceresoli @ 2026-07-14 14:30 UTC (permalink / raw)
To: Wolfram Sang
Cc: linux-kernel, Andrzej Hajda, Andy Yan, David Airlie, dri-devel,
Fabio Estevam, Frank Li, Heiko Stübner, imx, Jernej Skrabec,
Jonas Karlman, Laurent Pinchart, linux-arm-kernel, linux-rockchip,
Liu Ying, Luca Ceresoli, Maarten Lankhorst, Maxime Ripard,
Neil Armstrong, Pengutronix Kernel Team, Philipp Zabel,
Robert Foss, Sandy Huang, Sascha Hauer, Simona Vetter,
Thomas Zimmermann
On Sun, 05 Jul 2026 18:35:35 +0200, Wolfram Sang <wsa+renesas@sang-engineering.com> wrote:
> drm: remove unneeded 'fast_io' parameter in regmap_config
>
> When using MMIO with regmap, fast_io is implied. No need to set it
> again. No dependencies, can be applied directly to the subsystem tree.
> Buildbot is happy, too.
>
> Wolfram Sang (3):
> drm/bridge: remove unneeded 'fast_io' parameter in regmap_config
> drm/imx: remove unneeded 'fast_io' parameter in regmap_config
> drm/rockchip: remove unneeded 'fast_io' parameter in regmap_config
>
> [...]
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 11+ messages in thread