summaryrefslogtreecommitdiff
path: root/target/linux/sunxi/patches-3.12/103-clk-sunxi_add_pll5-6.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/sunxi/patches-3.12/103-clk-sunxi_add_pll5-6.patch')
-rw-r--r--target/linux/sunxi/patches-3.12/103-clk-sunxi_add_pll5-6.patch309
1 files changed, 0 insertions, 309 deletions
diff --git a/target/linux/sunxi/patches-3.12/103-clk-sunxi_add_pll5-6.patch b/target/linux/sunxi/patches-3.12/103-clk-sunxi_add_pll5-6.patch
deleted file mode 100644
index f680a42..0000000
--- a/target/linux/sunxi/patches-3.12/103-clk-sunxi_add_pll5-6.patch
+++ /dev/null
@@ -1,309 +0,0 @@
-From cad227619badf2a0ff2593d9935fedc84d5ef1ef Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
-Date: Sun, 26 May 2013 14:23:50 -0300
-Subject: [PATCH] clk: sunxi: add PLL5 and PLL6 support
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This commit implements PLL5 and PLL6 support on the sunxi clock driver.
-These PLLs use a similar factor clock, but differ on their outputs.
-
-Signed-off-by: Emilio López <emilio@elopez.com.ar>
----
- Documentation/devicetree/bindings/clock/sunxi.txt | 2 +
- drivers/clk/sunxi/clk-sunxi.c | 182 +++++++++++++++++++++-
- 2 files changed, 177 insertions(+), 7 deletions(-)
-
-diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt
-index 7d9245f..773f3ae 100644
---- a/Documentation/devicetree/bindings/clock/sunxi.txt
-+++ b/Documentation/devicetree/bindings/clock/sunxi.txt
-@@ -9,6 +9,8 @@ Required properties:
- "allwinner,sun4i-osc-clk" - for a gatable oscillator
- "allwinner,sun4i-pll1-clk" - for the main PLL clock and PLL4
- "allwinner,sun6i-a31-pll1-clk" - for the main PLL clock on A31
-+ "allwinner,sun4i-pll5-clk" - for the PLL5 clock
-+ "allwinner,sun4i-pll6-clk" - for the PLL6 clock
- "allwinner,sun4i-cpu-clk" - for the CPU multiplexer clock
- "allwinner,sun4i-axi-clk" - for the AXI clock
- "allwinner,sun4i-axi-gates-clk" - for the AXI gates
-diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
-index c0b0675..6947ba9 100644
---- a/drivers/clk/sunxi/clk-sunxi.c
-+++ b/drivers/clk/sunxi/clk-sunxi.c
-@@ -210,6 +210,40 @@ static void sun6i_a31_get_pll1_factors(u32 *freq, u32 parent_rate,
- }
-
- /**
-+ * sun4i_get_pll5_factors() - calculates n, k factors for PLL5
-+ * PLL5 rate is calculated as follows
-+ * rate = parent_rate * n * (k + 1)
-+ * parent_rate is always 24Mhz
-+ */
-+
-+static void sun4i_get_pll5_factors(u32 *freq, u32 parent_rate,
-+ u8 *n, u8 *k, u8 *m, u8 *p)
-+{
-+ u8 div;
-+
-+ /* Normalize value to a 24M multiple */
-+ div = *freq / 24000000;
-+ *freq = 24000000 * div;
-+
-+ /* we were called to round the frequency, we can now return */
-+ if (n == NULL)
-+ return;
-+
-+ if (div < 31)
-+ *k = 0;
-+ else if (div / 2 < 31)
-+ *k = 1;
-+ else if (div / 3 < 31)
-+ *k = 2;
-+ else
-+ *k = 3;
-+
-+ *n = DIV_ROUND_UP(div, (*k+1));
-+}
-+
-+
-+
-+/**
- * sun4i_get_apb1_factors() - calculates m, p factors for APB1
- * APB1 rate is calculated as follows
- * rate = (parent_rate >> p) / (m + 1);
-@@ -285,6 +319,13 @@ struct factors_data {
- .mwidth = 2,
- };
-
-+static struct clk_factors_config sun4i_pll5_config = {
-+ .nshift = 8,
-+ .nwidth = 5,
-+ .kshift = 4,
-+ .kwidth = 2,
-+};
-+
- static struct clk_factors_config sun4i_apb1_config = {
- .mshift = 0,
- .mwidth = 5,
-@@ -304,13 +345,19 @@ struct factors_data {
- .getter = sun6i_a31_get_pll1_factors,
- };
-
-+static const struct factors_data sun4i_pll5_data __initconst = {
-+ .enable = 31,
-+ .table = &sun4i_pll5_config,
-+ .getter = sun4i_get_pll5_factors,
-+};
-+
- static const struct factors_data sun4i_apb1_data __initconst = {
- .table = &sun4i_apb1_config,
- .getter = sun4i_get_apb1_factors,
- };
-
--static void __init sunxi_factors_clk_setup(struct device_node *node,
-- struct factors_data *data)
-+static struct clk * __init sunxi_factors_clk_setup(struct device_node *node,
-+ const struct factors_data *data)
- {
- struct clk *clk;
- struct clk_factors *factors;
-@@ -321,6 +368,7 @@ static void __init sunxi_factors_clk_setup(struct device_node *node,
- const char *clk_name = node->name;
- const char *parents[5];
- void *reg;
-+ unsigned long flags;
- int i = 0;
-
- reg = of_iomap(node, 0);
-@@ -331,14 +379,14 @@ static void __init sunxi_factors_clk_setup(struct device_node *node,
-
- factors = kzalloc(sizeof(struct clk_factors), GFP_KERNEL);
- if (!factors)
-- return;
-+ return NULL;
-
- /* Add a gate if this factor clock can be gated */
- if (data->enable) {
- gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL);
- if (!gate) {
- kfree(factors);
-- return;
-+ return NULL;
- }
-
- /* set up gate properties */
-@@ -354,7 +402,7 @@ static void __init sunxi_factors_clk_setup(struct device_node *node,
- if (!mux) {
- kfree(factors);
- kfree(gate);
-- return;
-+ return NULL;
- }
-
- /* set up gate properties */
-@@ -371,17 +419,21 @@ static void __init sunxi_factors_clk_setup(struct device_node *node,
- factors->get_factors = data->getter;
- factors->lock = &clk_lock;
-
-+ /* We should not disable pll5, it powers the RAM */
-+ flags = !strcmp("pll5", clk_name) ? CLK_IGNORE_UNUSED : 0;
-+
- clk = clk_register_composite(NULL, clk_name,
- parents, i,
- mux_hw, &clk_mux_ops,
- &factors->hw, &clk_factors_ops,
-- gate_hw, &clk_gate_ops,
-- i ? 0 : CLK_IS_ROOT);
-+ gate_hw, &clk_gate_ops, flags);
-
- if (!IS_ERR(clk)) {
- of_clk_add_provider(node, of_clk_src_simple_get, clk);
- clk_register_clkdev(clk, clk_name, NULL);
- }
-+
-+ return clk;
- }
-
-
-@@ -616,6 +668,112 @@ static void __init sunxi_gates_clk_setup(struct device_node *node,
- of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
- }
-
-+
-+
-+/**
-+ * sunxi_divs_clk_setup() - Setup function for leaf divisors on clocks
-+ */
-+
-+#define SUNXI_DIVS_MAX_QTY 2
-+#define SUNXI_DIVISOR_WIDTH 2
-+
-+struct divs_data {
-+ const struct factors_data *factors; /* data for the factor clock */
-+ struct {
-+ u8 fixed; /* is it a fixed divisor? if not... */
-+ struct clk_div_table *table; /* is it a table based divisor? */
-+ u8 shift; /* otherwise it's a normal divisor with this shift */
-+ u8 pow; /* is it power-of-two based? */
-+ } div[SUNXI_DIVS_MAX_QTY];
-+};
-+
-+static struct clk_div_table pll6_sata_table[] = {
-+ { .val = 0, .div = 6, },
-+ { .val = 1, .div = 12, },
-+ { .val = 2, .div = 18, },
-+ { .val = 3, .div = 24, },
-+ { } /* sentinel */
-+};
-+
-+static const struct divs_data pll5_divs_data __initconst = {
-+ .factors = &sun4i_pll5_data,
-+ .div = {
-+ { .shift = 0, .pow = 0, }, /* M, DDR */
-+ { .shift = 16, .pow = 1, }, /* P, other */
-+ }
-+};
-+
-+static const struct divs_data pll6_divs_data __initconst = {
-+ .factors = &sun4i_pll5_data,
-+ .div = {
-+ { .shift = 0, .table = pll6_sata_table }, /* M, SATA */
-+ { .fixed = 2 }, /* P, other */
-+ }
-+};
-+
-+static void __init sunxi_divs_clk_setup(struct device_node *node,
-+ struct divs_data *data)
-+{
-+ struct clk_onecell_data *clk_data;
-+ const char *parent = node->name;
-+ const char *clk_name;
-+ struct clk **clks, *pclk;
-+ void *reg;
-+ int i = 0;
-+ int flags, clkflags;
-+
-+ /* Set up factor clock that we will be dividing */
-+ pclk = sunxi_factors_clk_setup(node, data->factors);
-+
-+ reg = of_iomap(node, 0);
-+
-+ clk_data = kmalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
-+ if (!clk_data)
-+ return;
-+ clks = kzalloc(SUNXI_DIVS_MAX_QTY * sizeof(struct clk *), GFP_KERNEL);
-+ if (!clks) {
-+ kfree(clk_data);
-+ return;
-+ }
-+ clk_data->clks = clks;
-+
-+ /* It's not a good idea to have automatic reparenting changing
-+ * our RAM clock! */
-+ clkflags = !strcmp("pll5", parent) ? 0 : CLK_SET_RATE_PARENT;
-+
-+ for (i = 0; i < SUNXI_DIVS_MAX_QTY; i++) {
-+ if (of_property_read_string_index(node, "clock-output-names",
-+ i, &clk_name) != 0)
-+ break;
-+
-+ if (data->div[i].fixed) {
-+ clks[i] = clk_register_fixed_factor(NULL, clk_name,
-+ parent, clkflags,
-+ 1, data->div[i].fixed);
-+ } else {
-+ flags = data->div[i].pow ? CLK_DIVIDER_POWER_OF_TWO : 0;
-+ clks[i] = clk_register_divider_table(NULL, clk_name,
-+ parent, clkflags, reg,
-+ data->div[i].shift,
-+ SUNXI_DIVISOR_WIDTH, flags,
-+ data->div[i].table, &clk_lock);
-+ }
-+
-+ WARN_ON(IS_ERR(clk_data->clks[i]));
-+ clk_register_clkdev(clks[i], clk_name, NULL);
-+ }
-+
-+ /* The last clock available on the getter is the parent */
-+ clks[i++] = pclk;
-+
-+ /* Adjust to the real max */
-+ clk_data->clk_num = i;
-+
-+ of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
-+}
-+
-+
-+
- /* Matches for factors clocks */
- static const struct of_device_id clk_factors_match[] __initconst = {
- {.compatible = "allwinner,sun4i-pll1-clk", .data = &sun4i_pll1_data,},
-@@ -633,6 +791,13 @@ static void __init sunxi_gates_clk_setup(struct device_node *node,
- {}
- };
-
-+/* Matches for divided outputs */
-+static const struct of_device_id clk_divs_match[] __initconst = {
-+ {.compatible = "allwinner,sun4i-pll5-clk", .data = &pll5_divs_data,},
-+ {.compatible = "allwinner,sun4i-pll6-clk", .data = &pll6_divs_data,},
-+ {}
-+};
-+
- /* Matches for mux clocks */
- static const struct of_device_id clk_mux_match[] __initconst = {
- {.compatible = "allwinner,sun4i-cpu-clk", .data = &sun4i_cpu_mux_data,},
-@@ -688,6 +853,9 @@ void __init sunxi_init_clocks(void)
- /* Register divider clocks */
- of_sunxi_table_clock_setup(clk_div_match, sunxi_divider_clk_setup);
-
-+ /* Register divided output clocks */
-+ of_sunxi_table_clock_setup(clk_divs_match, sunxi_divs_clk_setup);
-+
- /* Register mux clocks */
- of_sunxi_table_clock_setup(clk_mux_match, sunxi_mux_clk_setup);
-
---
-1.8.4
-
generated by cgit v1.1 at 2024-11-15 23:22:57 +0000