[PATCH v5 4/9] soundwire: qcom: start the clock during initialization

Srinivas Kandagatla
2021-03-26T06:42:29Z

Start the clock during initialization, doing this explicitly
will add more clarity when we are adding clock stop feature.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
drivers/soundwire/qcom.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 43ec22a5e332..2bcb4362f0e0 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -47,6 +47,8 @@
#define SWRM_MCP_FRAME_CTRL_BANK_ADDR(m) (0x101C + 0x40 * (m))
#define SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK GENMASK(2, 0)
#define SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK GENMASK(7, 3)
+#define SWRM_MCP_BUS_CTRL 0x1044
+#define SWRM_MCP_BUS_CLK_START BIT(1)
#define SWRM_MCP_CFG_ADDR 0x1048
#define SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK GENMASK(21, 17)
#define SWRM_DEF_CMD_NO_PINGS 0x1f
@@ -343,6 +345,7 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
u32p_replace_bits(&val, SWRM_DEF_CMD_NO_PINGS, SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK);
ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);

+ ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START);
/* Configure number of retries of a read/write cmd */
if (ctrl->version > 0x01050001) {
/* Only for versions >= 1.5.1 */
--
2.21.0