diff mbox series

[v3,3/8] clk: sunxi-ng: Add feature to find closest rate

Message ID 20230702-pll-mipi_set_rate_parent-v3-3-46dcb8aa9cbc@oltmanns.dev
State New
Headers
Series clk: sunxi-ng: Consider alternative parent rates when determining NKM clock rate |

Commit Message

Frank Oltmanns July 2, 2023, 5:55 p.m. UTC 
  The default behaviour of clocks in the sunxi-ng driver is to select a
clock rate that is closest to but less than the requested rate.

Add the CCU_FEATURE_CLOSEST_RATE flag, which can be used to allow clocks
to find the closest rate instead.

Signed-off-by: Frank Oltmanns <frank@oltmanns.dev>
---
 drivers/clk/sunxi-ng/ccu_common.h | 1 +
 1 file changed, 1 insertion(+)

Comments

Maxime Ripard July 3, 2023, 6:48 a.m. UTC | #1 
On Sun, 2 Jul 2023 19:55:22 +0200, Frank Oltmanns wrote:
> The default behaviour of clocks in the sunxi-ng driver is to select a
> clock rate that is closest to but less than the requested rate.
> 
> Add the CCU_FEATURE_CLOSEST_RATE flag, which can be used to allow clocks
> to find the closest rate instead.
> 
> [ ... ]

Acked-by: Maxime Ripard <mripard@kernel.org>

Thanks!
Maxime
diff mbox series

Patch

diff --git a/drivers/clk/sunxi-ng/ccu_common.h b/drivers/clk/sunxi-ng/ccu_common.h
index fbf16c6b896d..5ad219f041d5 100644
--- a/drivers/clk/sunxi-ng/ccu_common.h
+++ b/drivers/clk/sunxi-ng/ccu_common.h
@@ -18,6 +18,7 @@ 
 #define CCU_FEATURE_MMC_TIMING_SWITCH	BIT(6)
 #define CCU_FEATURE_SIGMA_DELTA_MOD	BIT(7)
 #define CCU_FEATURE_KEY_FIELD		BIT(8)
+#define CCU_FEATURE_CLOSEST_RATE	BIT(9)
 
 /* MMC timing mode switch bit */
 #define CCU_MMC_NEW_TIMING_MODE		BIT(30)