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path: root/drivers/clk/clk-tango4.c
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Diffstat (limited to 'drivers/clk/clk-tango4.c')
-rw-r--r--drivers/clk/clk-tango4.c85
1 files changed, 0 insertions, 85 deletions
diff --git a/drivers/clk/clk-tango4.c b/drivers/clk/clk-tango4.c
deleted file mode 100644
index fe12a43f7a40..000000000000
--- a/drivers/clk/clk-tango4.c
+++ /dev/null
@@ -1,85 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-#include <linux/clk-provider.h>
-#include <linux/of_address.h>
-#include <linux/init.h>
-#include <linux/io.h>
-
-#define CLK_COUNT 4 /* cpu_clk, sys_clk, usb_clk, sdio_clk */
-static struct clk *clks[CLK_COUNT];
-static struct clk_onecell_data clk_data = { clks, CLK_COUNT };
-
-#define SYSCLK_DIV 0x20
-#define CPUCLK_DIV 0x24
-#define DIV_BYPASS BIT(23)
-
-/*** CLKGEN_PLL ***/
-#define extract_pll_n(val) ((val >> 0) & ((1u << 7) - 1))
-#define extract_pll_k(val) ((val >> 13) & ((1u << 3) - 1))
-#define extract_pll_m(val) ((val >> 16) & ((1u << 3) - 1))
-#define extract_pll_isel(val) ((val >> 24) & ((1u << 3) - 1))
-
-static void __init make_pll(int idx, const char *parent, void __iomem *base)
-{
- char name[8];
- u32 val, mul, div;
-
- sprintf(name, "pll%d", idx);
- val = readl(base + idx * 8);
- mul = extract_pll_n(val) + 1;
- div = (extract_pll_m(val) + 1) << extract_pll_k(val);
- clk_register_fixed_factor(NULL, name, parent, 0, mul, div);
- if (extract_pll_isel(val) != 1)
- panic("%s: input not set to XTAL_IN\n", name);
-}
-
-static void __init make_cd(int idx, void __iomem *base)
-{
- char name[8];
- u32 val, mul, div;
-
- sprintf(name, "cd%d", idx);
- val = readl(base + idx * 8);
- mul = 1 << 27;
- div = (2 << 27) + val;
- clk_register_fixed_factor(NULL, name, "pll2", 0, mul, div);
- if (val > 0xf0000000)
- panic("%s: unsupported divider %x\n", name, val);
-}
-
-static void __init tango4_clkgen_setup(struct device_node *np)
-{
- struct clk **pp = clk_data.clks;
- void __iomem *base = of_iomap(np, 0);
- const char *parent = of_clk_get_parent_name(np, 0);
-
- if (!base)
- panic("%pOFn: invalid address\n", np);
-
- if (readl(base + CPUCLK_DIV) & DIV_BYPASS)
- panic("%pOFn: unsupported cpuclk setup\n", np);
-
- if (readl(base + SYSCLK_DIV) & DIV_BYPASS)
- panic("%pOFn: unsupported sysclk setup\n", np);
-
- writel(0x100, base + CPUCLK_DIV); /* disable frequency ramping */
-
- make_pll(0, parent, base);
- make_pll(1, parent, base);
- make_pll(2, parent, base);
- make_cd(2, base + 0x80);
- make_cd(6, base + 0x80);
-
- pp[0] = clk_register_divider(NULL, "cpu_clk", "pll0", 0,
- base + CPUCLK_DIV, 8, 8, CLK_DIVIDER_ONE_BASED, NULL);
- pp[1] = clk_register_fixed_factor(NULL, "sys_clk", "pll1", 0, 1, 4);
- pp[2] = clk_register_fixed_factor(NULL, "usb_clk", "cd2", 0, 1, 2);
- pp[3] = clk_register_fixed_factor(NULL, "sdio_clk", "cd6", 0, 1, 2);
-
- if (IS_ERR(pp[0]) || IS_ERR(pp[1]) || IS_ERR(pp[2]) || IS_ERR(pp[3]))
- panic("%pOFn: clk registration failed\n", np);
-
- if (of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data))
- panic("%pOFn: clk provider registration failed\n", np);
-}
-CLK_OF_DECLARE(tango4_clkgen, "sigma,tango4-clkgen", tango4_clkgen_setup);