clk: scmi: add the command CLOCK_PARENT_SET

This patch adds the command CLOCK_PARENT_SET that can be used to set the
parent of a clock. ARM SCMI Version 3.2 supports to change the parent of
a clock device.

Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
Reviewed-by: Ye Li <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>

1 files changed, 19 insertions, 0 deletions

diff --git a/include/scmi_protocols.h b/include/scmi_protocols.h
index 34f272c448c..342a65ae7f4 100644
--- a/include/scmi_protocols.h
+++ b/include/scmi_protocols.h
@@ -737,6 +737,7 @@ enum scmi_clock_message_id {
 	SCMI_CLOCK_RATE_SET = 0x5,
 	SCMI_CLOCK_RATE_GET = 0x6,
 	SCMI_CLOCK_CONFIG_SET = 0x7,
+	SCMI_CLOCK_PARENT_SET = 0xD,
 };
 
 #define SCMI_CLK_PROTO_ATTR_COUNT_MASK	GENMASK(15, 0)
@@ -839,6 +840,24 @@ struct scmi_clk_rate_set_out {
 	s32 status;
 };
 
+/**
+ * struct scmi_clk_parent_state_in - Message payload for CLOCK_PARENT_SET command
+ * @clock_id:		SCMI clock ID
+ * @parent_clk:		SCMI clock ID
+ */
+struct scmi_clk_parent_set_in {
+	u32 clock_id;
+	u32 parent_clk;
+};
+
+/**
+ * struct scmi_clk_parent_set_out - Response payload for CLOCK_PARENT_SET command
+ * @status:	SCMI command status
+ */
+struct scmi_clk_parent_set_out {
+	s32 status;
+};
+
 /*
  * SCMI Reset Domain Protocol
  */