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media: v4l2-core: add pixel clock max frequency parallel port property

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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.fruchet@st.com>
Change-Id: I7bb7f8c5d95af6b19ace97a434ade2dae5d29dd6
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/linux-stm32/+/299249
ACI: CITOOLS <MDG-smet-aci-reviews@list.st.com>
ACI: CIBUILD <MDG-smet-aci-builds@list.st.com>
Tested-by: Alain VOLMAT <alain.volmat@foss.st.com>
Reviewed-by: Alain VOLMAT <alain.volmat@foss.st.com>
Reviewed-by: Philippe CORNU <philippe.cornu@foss.st.com>
Domain-Review: Philippe CORNU <philippe.cornu@foss.st.com>
This commit is contained in:
Hugues Fruchet
2018-09-06 15:33:13 +02:00
committed by Eric Fourmont
parent cc54460399
commit edef9eb9d5
2 changed files with 5 additions and 0 deletions
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3
drivers/media/v4l2-core/v4l2-fwnode.c
View File

@ -347,6 +347,9 @@ v4l2_fwnode_endpoint_parse_parallel_bus(struct fwnode_handle *fwnode,
pr_debug("data-enable-active %s\n", v ? "high" : "low");
}
if (!fwnode_property_read_u32(fwnode, "pclk-max-frequency", &v))
bus->pclk_max_frequency = v;
switch (bus_type) {
default:
bus->flags = flags;

2
include/media/v4l2-mediabus.h
View File

@ -94,11 +94,13 @@ struct v4l2_mbus_config_mipi_csi2 {
* @flags: media bus (V4L2_MBUS_*) flags
* @bus_width: bus width in bits
* @data_shift: data shift in bits
* @pclk_max_frequency: maximum pixel clock in hertz
*/
struct v4l2_mbus_config_parallel {
unsigned int flags;
unsigned char bus_width;
unsigned char data_shift;
unsigned int pclk_max_frequency;
};
/**