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authorPatrick Delaunay <patrick.delaunay@st.com>2019-11-12 15:39:58 +0100
committerAnatolij Gustschin <agust@denx.de>2019-11-12 16:15:53 +0100
commit754815b854258abf08f50e757599e8d15c9a85bd (patch)
treec53f8333c8c47e685229202fbf860092b95374e7 /drivers/video/stm32
parentec3dcea7447031463643c33143b3a5f027f0b54d (diff)
video: stm32: remove the compatible "synopsys, dw-mipi-dsi" support
Remove the compatible "synopsys,dw-mipi-dsi" added in U-Boot (it don't exist in Linux kernel binding); it is only used to bind the generic synopsys UCLASS_DSI_HOST "dw_mipi_dsi" to the driver "stm32-display-dsi" UCLASS_VIDEO_BRIDGE This binding is done in Linux kernel drivers without compatible (dw_mipi_dsi_bind() is called in bind of driver, for example in drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c). This patch does the same in U-Boot driver, the STM32 driver calls during its bind the function device_bind_driver_to_node to bind the generic driver "dw_mipi_dsi" at the same address. This patch reduces the device tree differences between Linux kernel and U-Boot for stm32mp1 platform. Tested with v2020.01-rc1 on STM32MP157C-EV1 and STM32MP157C-DK2. The dependency of driver is clearer and the probe order is guaranteed. STM32MP> dm tree Class Index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver sysreset 0 [ ] syscon_reboot |-- reboot simple_bus 0 [ + ] generic_simple_bus |-- soc serial 0 [ + ] serial_stm32 | |-- serial@40010000 ... video_brid 0 [ + ] stm32-display-dsi | |-- dsi@5a000000 dsi_host 0 [ + ] dw_mipi_dsi | | |-- dsihost panel 0 [ + ] rm68200_panel | | `-- panel-dsi@0 ... Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Diffstat (limited to 'drivers/video/stm32')
-rw-r--r--drivers/video/stm32/stm32_dsi.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/video/stm32/stm32_dsi.c b/drivers/video/stm32/stm32_dsi.c
index cb89576e1d..12895a8f5d 100644
--- a/drivers/video/stm32/stm32_dsi.c
+++ b/drivers/video/stm32/stm32_dsi.c
@@ -20,6 +20,7 @@
#include <asm/io.h>
#include <asm/arch/gpio.h>
#include <dm/device-internal.h>
+#include <dm/lists.h>
#include <linux/iopoll.h>
#include <power/regulator.h>
@@ -399,6 +400,18 @@ static int stm32_dsi_set_backlight(struct udevice *dev, int percent)
return 0;
}
+static int stm32_dsi_bind(struct udevice *dev)
+{
+ int ret;
+
+ ret = device_bind_driver_to_node(dev, "dw_mipi_dsi", "dsihost",
+ dev_ofnode(dev), NULL);
+ if (ret)
+ return ret;
+
+ return dm_scan_fdt_dev(dev);
+}
+
static int stm32_dsi_probe(struct udevice *dev)
{
struct stm32_dsi_priv *priv = dev_get_priv(dev);
@@ -483,7 +496,7 @@ U_BOOT_DRIVER(stm32_dsi) = {
.name = "stm32-display-dsi",
.id = UCLASS_VIDEO_BRIDGE,
.of_match = stm32_dsi_ids,
- .bind = dm_scan_fdt_dev,
+ .bind = stm32_dsi_bind,
.probe = stm32_dsi_probe,
.ops = &stm32_dsi_ops,
.priv_auto_alloc_size = sizeof(struct stm32_dsi_priv),