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path: root/drivers/clk/sirf/clk-atlas6.c
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-rw-r--r--drivers/clk/sirf/clk-atlas6.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/clk/sirf/clk-atlas6.c b/drivers/clk/sirf/clk-atlas6.c
new file mode 100644
index 000000000000..f9f4a15a64ab
--- /dev/null
+++ b/drivers/clk/sirf/clk-atlas6.c
@@ -0,0 +1,152 @@
+/*
+ * Clock tree for CSR SiRFatlasVI
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#include "atlas6.h"
+#include "clk-common.c"
+
+static struct clk_dmn clk_mmc01 = {
+ .regofs = SIRFSOC_CLKC_MMC01_CFG,
+ .enable_bit = 59,
+ .hw = {
+ .init = &clk_mmc01_init,
+ },
+};
+
+static struct clk_dmn clk_mmc23 = {
+ .regofs = SIRFSOC_CLKC_MMC23_CFG,
+ .enable_bit = 60,
+ .hw = {
+ .init = &clk_mmc23_init,
+ },
+};
+
+static struct clk_dmn clk_mmc45 = {
+ .regofs = SIRFSOC_CLKC_MMC45_CFG,
+ .enable_bit = 61,
+ .hw = {
+ .init = &clk_mmc45_init,
+ },
+};
+
+static struct clk_init_data clk_nand_init = {
+ .name = "nand",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_nand = {
+ .regofs = SIRFSOC_CLKC_NAND_CFG,
+ .enable_bit = 34,
+ .hw = {
+ .init = &clk_nand_init,
+ },
+};
+
+enum atlas6_clk_index {
+ /* 0 1 2 3 4 5 6 7 8 9 */
+ rtc, osc, pll1, pll2, pll3, mem, sys, security, dsp, gps,
+ mf, io, cpu, uart0, uart1, uart2, tsc, i2c0, i2c1, spi0,
+ spi1, pwmc, efuse, pulse, dmac0, dmac1, nand, audio, usp0, usp1,
+ usp2, vip, gfx, gfx2d, lcd, vpp, mmc01, mmc23, mmc45, usbpll,
+ usb0, usb1, cphif, maxclk,
+};
+
+static __initdata struct clk_hw *atlas6_clk_hw_array[maxclk] = {
+ NULL, /* dummy */
+ NULL,
+ &clk_pll1.hw,
+ &clk_pll2.hw,
+ &clk_pll3.hw,
+ &clk_mem.hw,
+ &clk_sys.hw,
+ &clk_security.hw,
+ &clk_dsp.hw,
+ &clk_gps.hw,
+ &clk_mf.hw,
+ &clk_io.hw,
+ &clk_cpu.hw,
+ &clk_uart0.hw,
+ &clk_uart1.hw,
+ &clk_uart2.hw,
+ &clk_tsc.hw,
+ &clk_i2c0.hw,
+ &clk_i2c1.hw,
+ &clk_spi0.hw,
+ &clk_spi1.hw,
+ &clk_pwmc.hw,
+ &clk_efuse.hw,
+ &clk_pulse.hw,
+ &clk_dmac0.hw,
+ &clk_dmac1.hw,
+ &clk_nand.hw,
+ &clk_audio.hw,
+ &clk_usp0.hw,
+ &clk_usp1.hw,
+ &clk_usp2.hw,
+ &clk_vip.hw,
+ &clk_gfx.hw,
+ &clk_gfx2d.hw,
+ &clk_lcd.hw,
+ &clk_vpp.hw,
+ &clk_mmc01.hw,
+ &clk_mmc23.hw,
+ &clk_mmc45.hw,
+ &usb_pll_clk_hw,
+ &clk_usb0.hw,
+ &clk_usb1.hw,
+ &clk_cphif.hw,
+};
+
+static struct clk *atlas6_clks[maxclk];
+
+static void __init atlas6_clk_init(struct device_node *np)
+{
+ struct device_node *rscnp;
+ int i;
+
+ rscnp = of_find_compatible_node(NULL, NULL, "sirf,prima2-rsc");
+ sirfsoc_rsc_vbase = of_iomap(rscnp, 0);
+ if (!sirfsoc_rsc_vbase)
+ panic("unable to map rsc registers\n");
+ of_node_put(rscnp);
+
+ sirfsoc_clk_vbase = of_iomap(np, 0);
+ if (!sirfsoc_clk_vbase)
+ panic("unable to map clkc registers\n");
+
+ /* These are always available (RTC and 26MHz OSC)*/
+ atlas6_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL,
+ CLK_IS_ROOT, 32768);
+ atlas6_clks[osc] = clk_register_fixed_rate(NULL, "osc", NULL,
+ CLK_IS_ROOT, 26000000);
+
+ for (i = pll1; i < maxclk; i++) {
+ atlas6_clks[i] = clk_register(NULL, atlas6_clk_hw_array[i]);
+ BUG_ON(!atlas6_clks[i]);
+ }
+ clk_register_clkdev(atlas6_clks[cpu], NULL, "cpu");
+ clk_register_clkdev(atlas6_clks[io], NULL, "io");
+ clk_register_clkdev(atlas6_clks[mem], NULL, "mem");
+ clk_register_clkdev(atlas6_clks[mem], NULL, "osc");
+
+ clk_data.clks = atlas6_clks;
+ clk_data.clk_num = maxclk;
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+}
+CLK_OF_DECLARE(atlas6_clk, "sirf,atlas6-clkc", atlas6_clk_init);