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Subject: media: tc358746: select CONFIG_GENERIC_PHY
Author:  Arnd Bergmann <[email protected]>
Date:    Fri Jun 23 17:23:09 2023 +0200

The tc358746 driver selects CONFIG_GENERIC_PHY_MIPI_DPHY and links to
that, but this fails when CONFIG_GENERIC_PHY is disabled, because Kbuild
then never enters the drivers/phy directory for building object files:

ERROR: modpost: "phy_mipi_dphy_get_default_config_for_hsclk" 
[drivers/media/i2c/tc358746.ko] undefined!

Add an explicit 'select GENERIC_PHY' here to ensure that the directory
is entered, and add another dependency on that symbol so make it
more obvious what is going on if another driver has the same problem,
as this will produce a Kconfig warning.

Link: 
https://lore.kernel.org/linux-media/[email protected]
Fixes: 80a21da360516 ("media: tc358746: add Toshiba TC358746 Parallel to CSI-2 
bridge driver")
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Marco Felsch <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/i2c/Kconfig | 1 +
 drivers/phy/Kconfig       | 1 +
 2 files changed, 2 insertions(+)

---

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index cf675ac4b132..226454b6a90d 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -1305,6 +1305,7 @@ config VIDEO_TC358746
        select VIDEO_V4L2_SUBDEV_API
        select MEDIA_CONTROLLER
        select V4L2_FWNODE
+       select GENERIC_PHY
        select GENERIC_PHY_MIPI_DPHY
        select REGMAP_I2C
        help
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index f46e3148d286..8dba9596408f 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -18,6 +18,7 @@ config GENERIC_PHY
 
 config GENERIC_PHY_MIPI_DPHY
        bool
+       depends on GENERIC_PHY
        help
          Generic MIPI D-PHY support.
 

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