Add pclk-max-frequency property in parallel port endpoint in order
to inform sensor of the maximum pixel clock frequency admissible
by camera interface that is connected on.
Signed-off-by: Hugues Fruchet <hugues.fruc...@st.com>
---
drivers/media/v4l2-core/v4l2-fwnode.c | 3 +++
include/media/v4l2-fwnode.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c
b/drivers/media/v4l2-core/v4l2-fwnode.c
index 169bdbb..505338e 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -158,6 +158,9 @@ static void v4l2_fwnode_endpoint_parse_parallel_bus(
flags |= v ? V4L2_MBUS_DATA_ENABLE_HIGH :
V4L2_MBUS_DATA_ENABLE_LOW;
+ if (!fwnode_property_read_u32(fwnode, "pclk-max-frequency", &v))
+ bus->pclk_max_frequency = v;
+
bus->flags = flags;
}
diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
index 9cccab6..946b48d 100644
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -52,11 +52,13 @@ struct v4l2_fwnode_bus_mipi_csi2 {
* @flags: media bus (V4L2_MBUS_*) flags
* @bus_width: bus width in bits
* @data_shift: data shift in bits
+ * @max_pclk_frequency: maximum pixel clock in hertz
*/
struct v4l2_fwnode_bus_parallel {
unsigned int flags;
unsigned char bus_width;
unsigned char data_shift;
+ unsigned int pclk_max_frequency;
};
/**
--
2.7.4
