clk: qcom: clk-rpmh: Fix overflow in BCM vote

Valid frequencies may result in BCM votes that exceed the max HW value.
Set vote ceiling to BCM_TCS_CMD_VOTE_MASK to ensure the votes aren't
truncated, which can result in lower frequencies than desired.

Fixes: 04053f4 ("clk: qcom: clk-rpmh: Add IPA clock support")
Cc: [email protected]
Signed-off-by: Mike Tipton <[email protected]>
Reviewed-by: Taniya Das <[email protected]>
Signed-off-by: Imran Shaik <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

Author: Mike Tipton

drivers/clk/qcom/clk-rpmh.c

@@ -263,6 +263,8 @@ static int clk_rpmh_bcm_send_cmd(struct clk_rpmh *c, bool enable)
 		cmd_state = 0;
 	}
 
+	cmd_state = min(cmd_state, BCM_TCS_CMD_VOTE_MASK);
+
 	if (c->last_sent_aggr_state != cmd_state) {
 		cmd.addr = c->res_addr;
 		cmd.data = BCM_TCS_CMD(1, enable, 0, cmd_state);