[PATCH 1/3] mmc: dw_mmc: Add parsing mmc_clk_phase_map support

Shawn Lin shawn.lin at rock-chips.com
Sun Mar 8 20:29:01 PDT 2026


The dw_mmc library already assists in invoking mmc_of_parse() to
provide unified parsing for variant drivers. We can also call
mmc_of_parse_clk_phase() to help variant drivers achieve unified parsing.

Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>
---

 drivers/mmc/host/dw_mmc.c | 2 ++
 drivers/mmc/host/dw_mmc.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index edea9f4..bbdd759 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2866,6 +2866,8 @@ static int dw_mci_init_host(struct dw_mci *host)
 	if (ret)
 		return ret;
 
+	mmc_of_parse_clk_phase(host->dev, &host->phase_map);
+
 	ret = dw_mci_init_host_caps(host);
 	if (ret)
 		return ret;
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 9a27d77..42e58be 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -130,6 +130,7 @@ struct dw_mci_dma_slave {
  * @pdev: platform_device registered
  * @rstc: Reset controller for this host.
  * @detect_delay_ms: Delay in mS before detecting cards after interrupt.
+ * @phase_map: The map for recording in and out phases for each timing
  *
  * Locking
  * =======
@@ -250,6 +251,7 @@ struct dw_mci {
 	struct platform_device	*pdev;
 	struct reset_control *rstc;
 	u32 detect_delay_ms;
+	struct mmc_clk_phase_map phase_map;
 };
 
 /* DMA ops for Internal/External DMAC interface */
-- 
2.7.4




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