diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.4/103-clk-sunxi-add-h3-clksupport.patch')
-rw-r--r-- | target/linux/sunxi/patches-4.4/103-clk-sunxi-add-h3-clksupport.patch | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/target/linux/sunxi/patches-4.4/103-clk-sunxi-add-h3-clksupport.patch b/target/linux/sunxi/patches-4.4/103-clk-sunxi-add-h3-clksupport.patch deleted file mode 100644 index 8bc66274c3..0000000000 --- a/target/linux/sunxi/patches-4.4/103-clk-sunxi-add-h3-clksupport.patch +++ /dev/null @@ -1,180 +0,0 @@ -From ab6e23a4e388f5f2696b8e92c350f845142da118 Mon Sep 17 00:00:00 2001 -From: Jens Kuske <jenskuske@gmail.com> -Date: Fri, 4 Dec 2015 22:24:40 +0100 -Subject: [PATCH] clk: sunxi: Add H3 clocks support - -The H3 clock control unit is similar to the those of other sun8i family -members like the A23. - -It adds a new bus gates clock similar to the simple gates, but with a -different parent clock for each single gate. -Some of the gates use the new AHB2 clock as parent, whose clock source -is muxable between AHB1 and PLL6/2. The documentation isn't totally clear -about which devices belong to AHB2 now, especially USB EHIC/OHIC, so it -is mostly based on Allwinner kernel source code. - -Signed-off-by: Jens Kuske <jenskuske@gmail.com> -Acked-by: Rob Herring <robh@kernel.org> -Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> ---- - Documentation/devicetree/bindings/clock/sunxi.txt | 2 + - drivers/clk/sunxi/Makefile | 1 + - drivers/clk/sunxi/clk-sun8i-bus-gates.c | 112 ++++++++++++++++++++++ - drivers/clk/sunxi/clk-sunxi.c | 6 ++ - 4 files changed, 121 insertions(+) - create mode 100644 drivers/clk/sunxi/clk-sun8i-bus-gates.c - ---- a/drivers/clk/sunxi/Makefile -+++ b/drivers/clk/sunxi/Makefile -@@ -10,6 +10,7 @@ obj-y += clk-a10-pll2.o - obj-y += clk-a20-gmac.o - obj-y += clk-mod0.o - obj-y += clk-simple-gates.o -+obj-y += clk-sun8i-bus-gates.o - obj-y += clk-sun8i-mbus.o - obj-y += clk-sun9i-core.o - obj-y += clk-sun9i-mmc.o ---- /dev/null -+++ b/drivers/clk/sunxi/clk-sun8i-bus-gates.c -@@ -0,0 +1,112 @@ -+/* -+ * Copyright (C) 2015 Jens Kuske <jenskuske@gmail.com> -+ * -+ * Based on clk-simple-gates.c, which is: -+ * Copyright 2015 Maxime Ripard -+ * -+ * Maxime Ripard <maxime.ripard@free-electrons.com> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; either version 2 of the License, or -+ * (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ */ -+ -+#include <linux/clk.h> -+#include <linux/clk-provider.h> -+#include <linux/of.h> -+#include <linux/of_address.h> -+#include <linux/slab.h> -+#include <linux/spinlock.h> -+ -+static DEFINE_SPINLOCK(gates_lock); -+ -+static void __init sun8i_h3_bus_gates_init(struct device_node *node) -+{ -+ static const char * const names[] = { "ahb1", "ahb2", "apb1", "apb2" }; -+ enum { AHB1, AHB2, APB1, APB2, PARENT_MAX } clk_parent; -+ const char *parents[PARENT_MAX]; -+ struct clk_onecell_data *clk_data; -+ const char *clk_name; -+ struct property *prop; -+ struct resource res; -+ void __iomem *clk_reg; -+ void __iomem *reg; -+ const __be32 *p; -+ int number, i; -+ u8 clk_bit; -+ u32 index; -+ -+ reg = of_io_request_and_map(node, 0, of_node_full_name(node)); -+ if (IS_ERR(reg)) -+ return; -+ -+ for (i = 0; i < ARRAY_SIZE(names); i++) { -+ index = of_property_match_string(node, "clock-names", -+ names[i]); -+ if (index < 0) -+ return; -+ -+ parents[i] = of_clk_get_parent_name(node, index); -+ } -+ -+ clk_data = kmalloc(sizeof(struct clk_onecell_data), GFP_KERNEL); -+ if (!clk_data) -+ goto err_unmap; -+ -+ number = of_property_count_u32_elems(node, "clock-indices"); -+ of_property_read_u32_index(node, "clock-indices", number - 1, &number); -+ -+ clk_data->clks = kcalloc(number + 1, sizeof(struct clk *), GFP_KERNEL); -+ if (!clk_data->clks) -+ goto err_free_data; -+ -+ i = 0; -+ of_property_for_each_u32(node, "clock-indices", prop, p, index) { -+ of_property_read_string_index(node, "clock-output-names", -+ i, &clk_name); -+ -+ if (index == 17 || (index >= 29 && index <= 31)) -+ clk_parent = AHB2; -+ else if (index <= 63 || index >= 128) -+ clk_parent = AHB1; -+ else if (index >= 64 && index <= 95) -+ clk_parent = APB1; -+ else if (index >= 96 && index <= 127) -+ clk_parent = APB2; -+ -+ clk_reg = reg + 4 * (index / 32); -+ clk_bit = index % 32; -+ -+ clk_data->clks[index] = clk_register_gate(NULL, clk_name, -+ parents[clk_parent], -+ 0, clk_reg, clk_bit, -+ 0, &gates_lock); -+ i++; -+ -+ if (IS_ERR(clk_data->clks[index])) { -+ WARN_ON(true); -+ continue; -+ } -+ } -+ -+ clk_data->clk_num = number + 1; -+ of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); -+ -+ return; -+ -+err_free_data: -+ kfree(clk_data); -+err_unmap: -+ iounmap(reg); -+ of_address_to_resource(node, 0, &res); -+ release_mem_region(res.start, resource_size(&res)); -+} -+ -+CLK_OF_DECLARE(sun8i_h3_bus_gates, "allwinner,sun8i-h3-bus-gates-clk", -+ sun8i_h3_bus_gates_init); ---- a/drivers/clk/sunxi/clk-sunxi.c -+++ b/drivers/clk/sunxi/clk-sunxi.c -@@ -778,6 +778,10 @@ static const struct mux_data sun6i_a31_a - .shift = 12, - }; - -+static const struct mux_data sun8i_h3_ahb2_mux_data __initconst = { -+ .shift = 0, -+}; -+ - static void __init sunxi_mux_clk_setup(struct device_node *node, - struct mux_data *data) - { -@@ -1130,6 +1134,7 @@ static const struct of_device_id clk_div - static const struct of_device_id clk_mux_match[] __initconst = { - {.compatible = "allwinner,sun4i-a10-cpu-clk", .data = &sun4i_cpu_mux_data,}, - {.compatible = "allwinner,sun6i-a31-ahb1-mux-clk", .data = &sun6i_a31_ahb1_mux_data,}, -+ {.compatible = "allwinner,sun8i-h3-ahb2-clk", .data = &sun8i_h3_ahb2_mux_data,}, - {} - }; - -@@ -1212,6 +1217,7 @@ CLK_OF_DECLARE(sun6i_a31_clk_init, "allw - CLK_OF_DECLARE(sun6i_a31s_clk_init, "allwinner,sun6i-a31s", sun6i_init_clocks); - CLK_OF_DECLARE(sun8i_a23_clk_init, "allwinner,sun8i-a23", sun6i_init_clocks); - CLK_OF_DECLARE(sun8i_a33_clk_init, "allwinner,sun8i-a33", sun6i_init_clocks); -+CLK_OF_DECLARE(sun8i_h3_clk_init, "allwinner,sun8i-h3", sun6i_init_clocks); - - static void __init sun9i_init_clocks(struct device_node *node) - { |