For the design of GCE hardware event signal transportation,
evnet rx will send the event signal to all GCE event merges
after receiving the event signal from the other hardware.

Because GCE event merges need to response to event rx, their
clocks must be enabled at that time.

To make sure all the gce clock is enabled while receiving the
hardware event, each cmdq mailbox should enable or disable
the others gce clk at the same time.

Signed-off-by: jason-jh.lin <redacted>
---
 drivers/mailbox/mtk-cmdq-mailbox.c | 102 +++++++++++++++++++++++------
 1 file changed, 83 insertions(+), 19 deletions(-)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index fc67888a677c..44a3cf252fd5 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c

@@ -19,6 +19,7 @@

 #define CMDQ_OP_CODE_MASK              (0xff << CMDQ_OP_CODE_SHIFT)
 #define CMDQ_NUM_CMD(t)                        (t->cmd_buf_size / CMDQ_INST_SIZE)
+#define CMDQ_GCE_NUM_MAX               (2)

 #define CMDQ_CURR_IRQ_STATUS           0x10
 #define CMDQ_SYNC_TOKEN_UPDATE         0x68

@@ -73,14 +74,16 @@ struct cmdq {
        u32                     thread_nr;
        u32                     irq_mask;
        struct cmdq_thread      *thread;
-       struct clk              *clock;
+       struct clk              *clock[CMDQ_GCE_NUM_MAX];
        bool                    suspended;
        u8                      shift_pa;
+       u32                     gce_num;
 };

 struct gce_plat {
        u32 thread_nr;
        u8 shift;
+       u32 gce_num;
 };

 u8 cmdq_get_shift_pa(struct mbox_chan *chan)

@@ -120,11 +123,15 @@ static void cmdq_init(struct cmdq *cmdq)
 {
        int i;

-       WARN_ON(clk_enable(cmdq->clock) < 0);
+       for (i = 0; i < cmdq->gce_num; i++)
+               WARN_ON(clk_enable(cmdq->clock[i]) < 0);
+