Move the MBUS clock to the module clocks file. It's pretty trivial, but still
requires to enable the clocks to make sure it won't get disabled.
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
---
drivers/clk/sunxi/clk-mod0.c | 12 +++++++++
drivers/clk/sunxi/clk-sunxi.c | 57 -------------------------------------------
2 files changed, 12 insertions(+), 57 deletions(-)
diff --git a/drivers/clk/sunxi/clk-mod0.c b/drivers/clk/sunxi/clk-mod0.c
index bce09a84ab4f..a179299ec79d 100644
--- a/drivers/clk/sunxi/clk-mod0.c
+++ b/drivers/clk/sunxi/clk-mod0.c
@@ -80,3 +80,15 @@ static void __init sun4i_a10_mod0_setup(struct device_node *node)
sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun4i_a10_mod0_lock);
}
CLK_OF_DECLARE(sun4i_a10_mod0, "allwinner,sun4i-a10-mod0-clk", sun4i_a10_mod0_setup);
+
+static DEFINE_SPINLOCK(sun4i_a10_mbus_lock);
+
+static void __init sun4i_a10_mbus_setup(struct device_node *node)
+{
+ struct clk *mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun4i_a10_mbus_lock);
+
+ /* The MBUS clocks needs to be always enabled */
+ __clk_get(mbus);
+ clk_prepare_enable(mbus);
+}
+CLK_OF_DECLARE(sun4i_a10_mbus, "allwinner,sun4i-a10-mbus-clk", sun4i_a10_mbus_setup);
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 4c0c35804c1b..46f21392a061 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -320,46 +320,6 @@ static void sun4i_get_apb1_factors(u32 *freq, u32 parent_rate,
-/**
- * sun4i_get_mod0_factors() - calculates m, n factors for MOD0-style clocks
- * MOD0 rate is calculated as follows
- * rate = (parent_rate >> p) / (m + 1);
- */
-
-static void sun4i_get_mod0_factors(u32 *freq, u32 parent_rate,
- u8 *n, u8 *k, u8 *m, u8 *p)
-{
- u8 div, calcm, calcp;
-
- /* These clocks can only divide, so we will never be able to achieve
- * frequencies higher than the parent frequency */
- if (*freq > parent_rate)
- *freq = parent_rate;
-
- div = DIV_ROUND_UP(parent_rate, *freq);
-
- if (div < 16)
- calcp = 0;
- else if (div / 2 < 16)
- calcp = 1;
- else if (div / 4 < 16)
- calcp = 2;
- else
- calcp = 3;
-
- calcm = DIV_ROUND_UP(div, 1 << calcp);
-
- *freq = (parent_rate >> calcp) / calcm;
-
- /* we were called to round the frequency, we can now return */
- if (n == NULL)
- return;
-
- *m = calcm - 1;
- *p = calcp;
-}
-
-
/**
* sun7i_a20_get_out_factors() - calculates m, p factors for CLK_OUT_A/B
@@ -495,14 +455,6 @@ static struct clk_factors_config sun4i_apb1_config = {
};
/* user manual says "n" but it's really "p" */
-static struct clk_factors_config sun4i_mod0_config = {
- .mshift = 0,
- .mwidth = 4,
- .pshift = 16,
- .pwidth = 2,
-};
-
-/* user manual says "n" but it's really "p" */
static struct clk_factors_config sun7i_a20_out_config = {
.mshift = 8,
.mwidth = 5,
@@ -559,13 +511,6 @@ static const struct factors_data sun4i_apb1_data __initconst = {
.getter = sun4i_get_apb1_factors,
};
-static const struct factors_data sun4i_mod0_data __initconst = {
- .enable = 31,
- .mux = 24,
- .table = &sun4i_mod0_config,
- .getter = sun4i_get_mod0_factors,
-};
-
static const struct factors_data sun7i_a20_out_data __initconst = {
.enable = 31,
.mux = 24,
@@ -1110,7 +1055,6 @@ static const struct of_device_id clk_factors_match[] __initconst = {
{.compatible = "allwinner,sun7i-a20-pll4-clk", .data = &sun7i_a20_pll4_data,},
{.compatible = "allwinner,sun6i-a31-pll6-clk", .data = &sun6i_a31_pll6_data,},
{.compatible = "allwinner,sun4i-a10-apb1-clk", .data = &sun4i_apb1_data,},
- {.compatible = "allwinner,sun4i-a10-mbus-clk", .data = &sun4i_mod0_data,},
{.compatible = "allwinner,sun7i-a20-out-clk", .data = &sun7i_a20_out_data,},
{}
};
@@ -1222,7 +1166,6 @@ static void __init sun4i_a10_init_clocks(struct device_node *node)
CLK_OF_DECLARE(sun4i_a10_clk_init, "allwinner,sun4i-a10", sun4i_a10_init_clocks);
static const char *sun5i_critical_clocks[] __initdata = {
- "mbus",
"pll5_ddr",
"ahb_sdram",
};
--
2.0.1
--
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