The MMC2 clock supports a new timing mode. When the new mode is active,
the output clock rate is halved.

This patch sets the feature flag for the new timing mode, and adds
a pre-divider based on the mode bit.

Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
 drivers/clk/sunxi-ng/ccu-sun8i-a83t.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-a83t.c 
b/drivers/clk/sunxi-ng/ccu-sun8i-a83t.c
index 947f9f6e05d2..c5656e4f2a38 100644
--- a/drivers/clk/sunxi-ng/ccu-sun8i-a83t.c
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-a83t.c
@@ -418,14 +418,13 @@ static SUNXI_CCU_PHASE(mmc1_sample_clk, "mmc1-sample", 
"mmc1",
 static SUNXI_CCU_PHASE(mmc1_output_clk, "mmc1-output", "mmc1",
                       0x08c, 8, 3, 0);
 
-/* TODO Support MMC2 clock's new timing mode. */
-static SUNXI_CCU_MP_WITH_MUX_GATE(mmc2_clk, "mmc2", mod0_default_parents,
-                                 0x090,
-                                 0, 4,         /* M */
-                                 16, 2,        /* P */
-                                 24, 2,        /* mux */
-                                 BIT(31),      /* gate */
-                                 0);
+static SUNXI_CCU_MP_MMC_WITH_MUX_GATE(mmc2_clk, "mmc2", mod0_default_parents,
+                                     0x090,
+                                     0, 4,     /* M */
+                                     16, 2,    /* P */
+                                     24, 2,    /* mux */
+                                     BIT(31),  /* gate */
+                                     CLK_GET_RATE_NOCACHE);
 
 static SUNXI_CCU_PHASE(mmc2_sample_clk, "mmc2-sample", "mmc2",
                       0x090, 20, 3, 0);
-- 
2.13.2

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