diff mbox

[5/7,v2] clk: atlas7: fix the clock tree for bluetooth stuff

Message ID 1438699532-13860-6-git-send-email-21cnbao@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Barry Song Aug. 4, 2015, 2:45 p.m. UTC 
From: Guo Zeng <guo.zeng@csr.com>

normally dmac should depends on only one clock, to operate
dmac internal register, but dmac4 is very special case, it
normally dmac should depends on only one clock, to operate
dmac internal register, but dmac4 is very special case, it
depends on two additional clock, the reason is that dmac4
is wrapped in hw into bt a7ca module, and accessing dmac4
internal register would also require that the a7ca_io and
related bt macro io clk also enabled.
here workaround this by setting depend clk into parent of
dmac4, and also related clks, to reflect dependency.
noc_io
    -btm_noc_clk
            -a7ca_io
                    -dmac4_io
                                    -uart6_io
                                    -usp3_io

Signed-off-by: Guo Zeng <guo.zeng@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
---
 drivers/clk/sirf/clk-atlas7.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox

Patch

diff --git a/drivers/clk/sirf/clk-atlas7.c b/drivers/clk/sirf/clk-atlas7.c
index 1000421..c1788df 100644
--- a/drivers/clk/sirf/clk-atlas7.c
+++ b/drivers/clk/sirf/clk-atlas7.c
@@ -1169,10 +1169,10 @@  static struct atlas7_unit_init_data unit_list[] __initdata = {
 	{ 127, "vss_sdr", "gpum_sdr", 0, SIRFSOC_CLKC_LEAF_CLK_EN7_SET, 1, &leaf7_gate_lock },
 	{ 128, "thgpum_nocr", "gpum_nocr", 0, SIRFSOC_CLKC_LEAF_CLK_EN7_SET, 2, &leaf7_gate_lock },
 	{ 129, "a7ca_btss", "btm_btss", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 1, &leaf8_gate_lock },
-	{ 130, "dmac4_io", "btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 2, &leaf8_gate_lock },
-	{ 131, "uart6_io", "btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 3, &leaf8_gate_lock },
-	{ 132, "usp3_io", "btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 4, &leaf8_gate_lock },
-	{ 133, "a7ca_io", "btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 5, &leaf8_gate_lock },
+	{ 130 , "dmac4_io", "a7ca_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 2, &leaf8_gate_lock },
+	{ 131 , "uart6_io", "dmac4_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 3, &leaf8_gate_lock },
+	{ 132 , "usp3_io", "dmac4_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 4, &leaf8_gate_lock },
+	{ 133 , "a7ca_io", "noc_btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 5, &leaf8_gate_lock },
 	{ 134, "noc_btm_io", "btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 6, &leaf8_gate_lock },
 	{ 135, "thbtm_io", "btm_io", 0, SIRFSOC_CLKC_LEAF_CLK_EN8_SET, 7, &leaf8_gate_lock },
 	{ 136, "btslow", "xinw_fixdiv_btslow", 0, SIRFSOC_CLKC_ROOT_CLK_EN1_SET, 25, &root1_gate_lock },