The tda998x driver accepts 3 chips only from the TDA998x family.
This patch changes the driver to accept only these chips.

Signed-off-by: Jean-Francois Moine <moin...@free.fr>
---
 Documentation/devicetree/bindings/drm/i2c/tda998x.txt | 4 ++--
 drivers/gpu/drm/i2c/tda998x_drv.c                     | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/drm/i2c/tda998x.txt 
b/Documentation/devicetree/bindings/drm/i2c/tda998x.txt
index fc7effa..e3f3d65 100644
--- a/Documentation/devicetree/bindings/drm/i2c/tda998x.txt
+++ b/Documentation/devicetree/bindings/drm/i2c/tda998x.txt
@@ -1,7 +1,7 @@
 Device-Tree bindings for the NXP TDA998x HDMI transmitter
 
 Required properties;
-  - compatible: must be "nxp,tda998x"
+  - compatible: may be "nxp,tda9989", "nxp,tda19988" or "nxp,tda19989"
 
   - reg: I2C address
 
@@ -20,7 +20,7 @@ Optional properties:
 Example:
 
        tda998x: hdmi-encoder {
-               compatible = "nxp,tda998x";
+               compatible = "nxp,tda19988";
                reg = <0x70>;
                interrupt-parent = <&gpio0>;
                interrupts = <27 2>;            /* falling edge */
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c 
b/drivers/gpu/drm/i2c/tda998x_drv.c
index 48af5ca..fd6751c 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1367,7 +1367,9 @@ fail:
 
 #ifdef CONFIG_OF
 static const struct of_device_id tda998x_dt_ids[] = {
-       { .compatible = "nxp,tda998x", },
+       { .compatible = "nxp,tda9989", },
+       { .compatible = "nxp,tda19988", },
+       { .compatible = "nxp,tda19989", },
        { }
 };
 MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
-- 
1.9.1

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