diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.12/115-clk-sunxi-muxable-ahb-clock.patch')
-rw-r--r-- | target/linux/sunxi/patches-3.12/115-clk-sunxi-muxable-ahb-clock.patch | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/target/linux/sunxi/patches-3.12/115-clk-sunxi-muxable-ahb-clock.patch b/target/linux/sunxi/patches-3.12/115-clk-sunxi-muxable-ahb-clock.patch deleted file mode 100644 index 3446b37..0000000 --- a/target/linux/sunxi/patches-3.12/115-clk-sunxi-muxable-ahb-clock.patch +++ /dev/null @@ -1,102 +0,0 @@ -From 147a46beeb49c6baabb85126d570f330a2ba7cad Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar> -Date: Sat, 14 Sep 2013 20:48:40 -0300 -Subject: [PATCH] clk: sunxi: Implement muxable AHB clock -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -sun5i and sun7i have a mux to change the AHB clock parent, this commit -adds support for it on the driver. - -Signed-off-by: Emilio López <emilio@elopez.com.ar> ---- - Documentation/devicetree/bindings/clock/sunxi.txt | 1 + - drivers/clk/sunxi/clk-sunxi.c | 37 +++++++++++++++++++++++ - 2 files changed, 38 insertions(+) - -diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt -index e840cb2..941bd93 100644 ---- a/Documentation/devicetree/bindings/clock/sunxi.txt -+++ b/Documentation/devicetree/bindings/clock/sunxi.txt -@@ -15,6 +15,7 @@ Required properties: - "allwinner,sun4i-axi-clk" - for the AXI clock - "allwinner,sun4i-axi-gates-clk" - for the AXI gates - "allwinner,sun4i-ahb-clk" - for the AHB clock -+ "allwinner,sun5i-a13-ahb-clk" - for the AHB clock on A13 - "allwinner,sun4i-ahb-gates-clk" - for the AHB gates on A10 - "allwinner,sun5i-a13-ahb-gates-clk" - for the AHB gates on A13 - "allwinner,sun5i-a10s-ahb-gates-clk" - for the AHB gates on A10s -diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c -index 0ecaa18..360d705 100644 ---- a/drivers/clk/sunxi/clk-sunxi.c -+++ b/drivers/clk/sunxi/clk-sunxi.c -@@ -240,7 +240,32 @@ static void sun4i_get_pll5_factors(u32 *freq, u32 parent_rate, - *n = DIV_ROUND_UP(div, (*k+1)); - } - -+/** -+ * sun5i_get_ahb_factors() - calculates p factor for AHB -+ * AHB rate is calculated as follows -+ * rate = parent_rate >> p -+ */ - -+static void sun5i_a13_get_ahb_factors(u32 *freq, u32 parent_rate, -+ u8 *n, u8 *k, u8 *m, u8 *p) -+{ -+ u8 div; -+ -+ /* This clock can only divide, so we will never achieve a higher -+ * rate than the parent's */ -+ if (*freq > parent_rate) -+ *freq = parent_rate; -+ -+ /* Normalize value to a parent multiple */ -+ div = *freq / parent_rate; -+ *freq = parent_rate * div; -+ -+ /* we were called to round the frequency, we can now return */ -+ if (n == NULL) -+ return; -+ -+ *p = div; -+} - - /** - * sun4i_get_apb1_factors() - calculates m, p factors for APB1 -@@ -366,6 +391,11 @@ struct factors_data { - .kwidth = 2, - }; - -+static struct clk_factors_config sun5i_a13_ahb_config = { -+ .pshift = 4, -+ .pwidth = 2, -+}; -+ - static struct clk_factors_config sun4i_apb1_config = { - .mshift = 0, - .mwidth = 5, -@@ -399,6 +429,12 @@ struct factors_data { - .getter = sun4i_get_pll5_factors, - }; - -+static const struct factors_data sun5i_a13_ahb_data __initconst = { -+ .mux = 6, -+ .table = &sun5i_a13_ahb_config, -+ .getter = sun5i_a13_get_ahb_factors, -+}; -+ - static const struct factors_data sun4i_apb1_data __initconst = { - .mux = 24, - .table = &sun4i_apb1_config, -@@ -842,6 +878,7 @@ static void __init sunxi_divs_clk_setup(struct device_node *node, - static const struct of_device_id clk_factors_match[] __initconst = { - {.compatible = "allwinner,sun4i-pll1-clk", .data = &sun4i_pll1_data,}, - {.compatible = "allwinner,sun6i-a31-pll1-clk", .data = &sun6i_a31_pll1_data,}, -+ {.compatible = "allwinner,sun5i-a13-ahb-clk", .data = &sun5i_a13_ahb_data,}, - {.compatible = "allwinner,sun4i-apb1-clk", .data = &sun4i_apb1_data,}, - {.compatible = "allwinner,sun4i-mod0-clk", .data = &sun4i_mod0_data,}, - {} --- -1.8.5.1 - |