diff mbox series

clk: meson: axg: round audio system master clocks down

Message ID 20180801140732.27671-1-jbrunet@baylibre.com
State Accepted
Commit 56dbabc0ff733ab0828e9567c886933fe77fa087
Headers show
Series clk: meson: axg: round audio system master clocks down | expand

Commit Message

Jerome Brunet Aug. 1, 2018, 2:07 p.m. UTC 
Some of the master clocks provided by the axg audio clock controller are
system clock (spdifin and pdm sysclk). They are used to clock an internal
DSP of the related devices. Having them constantly rounded down instead
of closest is preferable.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

---
 drivers/clk/meson/axg-audio.c | 34 +++++++++++++++++++++++-----------
 1 file changed, 23 insertions(+), 11 deletions(-)

-- 
2.17.1

Comments

Jerome Brunet Aug. 27, 2018, 1 p.m. UTC | #1 
On Wed, 2018-08-01 at 16:07 +0200, Jerome Brunet wrote:
> Some of the master clocks provided by the axg audio clock controller are

> system clock (spdifin and pdm sysclk). They are used to clock an internal

> DSP of the related devices. Having them constantly rounded down instead

> of closest is preferable.

> 

> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

> ---

>  drivers/clk/meson/axg-audio.c | 34 +++++++++++++++++++++++-----------

>  1 file changed, 23 insertions(+), 11 deletions(-)


queued for 4.20
diff mbox series

Patch

diff --git a/drivers/clk/meson/axg-audio.c b/drivers/clk/meson/axg-audio.c
index a0ed41e73bde..5f6c860aa122 100644
--- a/drivers/clk/meson/axg-audio.c
+++ b/drivers/clk/meson/axg-audio.c
@@ -101,10 +101,16 @@  static const char * const mst_mux_parent_names[] = {
 	"axg_mst_in4", "axg_mst_in5", "axg_mst_in6", "axg_mst_in7",
 };
 
-#define AXG_MST_MCLK_MUX(_name, _reg)					\
-	AXG_AUD_MUX(_name##_sel, _reg, 0x7, 24, CLK_MUX_ROUND_CLOSEST, \
+#define AXG_MST_MUX(_name, _reg, _flag)				\
+	AXG_AUD_MUX(_name##_sel, _reg, 0x7, 24, _flag,		\
 		    mst_mux_parent_names, CLK_SET_RATE_PARENT)
 
+#define AXG_MST_MCLK_MUX(_name, _reg)				\
+	AXG_MST_MUX(_name, _reg, CLK_MUX_ROUND_CLOSEST)
+
+#define AXG_MST_SYS_MUX(_name, _reg)				\
+	AXG_MST_MUX(_name, _reg, 0)
+
 static AXG_MST_MCLK_MUX(mst_a_mclk,   AUDIO_MCLK_A_CTRL);
 static AXG_MST_MCLK_MUX(mst_b_mclk,   AUDIO_MCLK_B_CTRL);
 static AXG_MST_MCLK_MUX(mst_c_mclk,   AUDIO_MCLK_C_CTRL);
@@ -112,13 +118,19 @@  static AXG_MST_MCLK_MUX(mst_d_mclk,   AUDIO_MCLK_D_CTRL);
 static AXG_MST_MCLK_MUX(mst_e_mclk,   AUDIO_MCLK_E_CTRL);
 static AXG_MST_MCLK_MUX(mst_f_mclk,   AUDIO_MCLK_F_CTRL);
 static AXG_MST_MCLK_MUX(spdifout_clk, AUDIO_CLK_SPDIFOUT_CTRL);
-static AXG_MST_MCLK_MUX(spdifin_clk,  AUDIO_CLK_SPDIFIN_CTRL);
 static AXG_MST_MCLK_MUX(pdm_dclk,     AUDIO_CLK_PDMIN_CTRL0);
-static AXG_MST_MCLK_MUX(pdm_sysclk,   AUDIO_CLK_PDMIN_CTRL1);
+static AXG_MST_SYS_MUX(spdifin_clk,   AUDIO_CLK_SPDIFIN_CTRL);
+static AXG_MST_SYS_MUX(pdm_sysclk,    AUDIO_CLK_PDMIN_CTRL1);
+
+#define AXG_MST_DIV(_name, _reg, _flag)				\
+	AXG_AUD_DIV(_name##_div, _reg, 0, 16, _flag,		\
+		    "axg_"#_name"_sel", CLK_SET_RATE_PARENT)	\
+
+#define AXG_MST_MCLK_DIV(_name, _reg)				\
+	AXG_MST_DIV(_name, _reg, CLK_DIVIDER_ROUND_CLOSEST)
 
-#define AXG_MST_MCLK_DIV(_name, _reg)					\
-	AXG_AUD_DIV(_name##_div, _reg, 0, 16, CLK_DIVIDER_ROUND_CLOSEST, \
-		    "axg_"#_name"_sel", CLK_SET_RATE_PARENT)		\
+#define AXG_MST_SYS_DIV(_name, _reg)				\
+	AXG_MST_DIV(_name, _reg, 0)
 
 static AXG_MST_MCLK_DIV(mst_a_mclk,   AUDIO_MCLK_A_CTRL);
 static AXG_MST_MCLK_DIV(mst_b_mclk,   AUDIO_MCLK_B_CTRL);
@@ -127,12 +139,12 @@  static AXG_MST_MCLK_DIV(mst_d_mclk,   AUDIO_MCLK_D_CTRL);
 static AXG_MST_MCLK_DIV(mst_e_mclk,   AUDIO_MCLK_E_CTRL);
 static AXG_MST_MCLK_DIV(mst_f_mclk,   AUDIO_MCLK_F_CTRL);
 static AXG_MST_MCLK_DIV(spdifout_clk, AUDIO_CLK_SPDIFOUT_CTRL);
-static AXG_MST_MCLK_DIV(spdifin_clk,  AUDIO_CLK_SPDIFIN_CTRL);
 static AXG_MST_MCLK_DIV(pdm_dclk,     AUDIO_CLK_PDMIN_CTRL0);
-static AXG_MST_MCLK_DIV(pdm_sysclk,   AUDIO_CLK_PDMIN_CTRL1);
+static AXG_MST_SYS_DIV(spdifin_clk,   AUDIO_CLK_SPDIFIN_CTRL);
+static AXG_MST_SYS_DIV(pdm_sysclk,    AUDIO_CLK_PDMIN_CTRL1);
 
-#define AXG_MST_MCLK_GATE(_name, _reg)					\
-	AXG_AUD_GATE(_name, _reg, 31,  "axg_"#_name"_div",		\
+#define AXG_MST_MCLK_GATE(_name, _reg)				\
+	AXG_AUD_GATE(_name, _reg, 31,  "axg_"#_name"_div",	\
 		     CLK_SET_RATE_PARENT)
 
 static AXG_MST_MCLK_GATE(mst_a_mclk,   AUDIO_MCLK_A_CTRL);