* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
-#include <linux/kernel.h>
-#include <linux/init.h>
#include <linux/clk.h>
-#include <linux/io.h>
#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <dt-bindings/clock/imx1-clock.h>
#include "clk.h"
#include "common.h"
#include "hardware.h"
-/* CCM register addresses */
-#define IO_ADDR_CCM(off) (MX1_IO_ADDRESS(MX1_CCM_BASE_ADDR + (off)))
-
-#define CCM_CSCR IO_ADDR_CCM(0x0)
-#define CCM_MPCTL0 IO_ADDR_CCM(0x4)
-#define CCM_SPCTL0 IO_ADDR_CCM(0xc)
-#define CCM_PCDR IO_ADDR_CCM(0x20)
-
-/* SCM register addresses */
-#define IO_ADDR_SCM(off) (MX1_IO_ADDRESS(MX1_SCM_BASE_ADDR + (off)))
-
-#define SCM_GCCR IO_ADDR_SCM(0xc)
-
static const char *prem_sel_clks[] = { "clk32_premult", "clk16m", };
static const char *clko_sel_clks[] = { "per1", "hclk", "clk48m", "clk16m",
"prem", "fclk", };
-enum imx1_clks {
- dummy, clk32, clk16m_ext, clk16m, clk32_premult, prem, mpll, mpll_gate,
- spll, spll_gate, mcu, fclk, hclk, clk48m, per1, per2, per3, clko,
- uart3_gate, ssi2_gate, brom_gate, dma_gate, csi_gate, mma_gate,
- usbd_gate, clk_max
-};
+static struct clk *clk[IMX1_CLK_MAX];
+static struct clk_onecell_data clk_data;
-static struct clk *clk[clk_max];
+static void __iomem *ccm __initdata;
+#define CCM_CSCR (ccm + 0x0000)
+#define CCM_MPCTL0 (ccm + 0x0004)
+#define CCM_SPCTL0 (ccm + 0x000c)
+#define CCM_PCDR (ccm + 0x0020)
+#define SCM_GCCR (ccm + 0x0810)
-int __init mx1_clocks_init(unsigned long fref)
+static void __init _mx1_clocks_init(unsigned long fref)
{
- int i;
+ clk[IMX1_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
+ clk[IMX1_CLK_CLK32] = imx_obtain_fixed_clock("clk32", fref);
+ clk[IMX1_CLK_CLK16M_EXT] = imx_clk_fixed("clk16m_ext", 16000000);
+ clk[IMX1_CLK_CLK16M] = imx_clk_gate("clk16m", "clk16m_ext", CCM_CSCR, 17);
+ clk[IMX1_CLK_CLK32_PREMULT] = imx_clk_fixed_factor("clk32_premult", "clk32", 512, 1);
+ clk[IMX1_CLK_PREM] = imx_clk_mux("prem", CCM_CSCR, 16, 1, prem_sel_clks, ARRAY_SIZE(prem_sel_clks));
+ clk[IMX1_CLK_MPLL] = imx_clk_pllv1("mpll", "clk32_premult", CCM_MPCTL0);
+ clk[IMX1_CLK_MPLL_GATE] = imx_clk_gate("mpll_gate", "mpll", CCM_CSCR, 0);
+ clk[IMX1_CLK_SPLL] = imx_clk_pllv1("spll", "prem", CCM_SPCTL0);
+ clk[IMX1_CLK_SPLL_GATE] = imx_clk_gate("spll_gate", "spll", CCM_CSCR, 1);
+ clk[IMX1_CLK_MCU] = imx_clk_divider("mcu", "clk32_premult", CCM_CSCR, 15, 1);
+ clk[IMX1_CLK_FCLK] = imx_clk_divider("fclk", "mpll_gate", CCM_CSCR, 15, 1);
+ clk[IMX1_CLK_HCLK] = imx_clk_divider("hclk", "spll_gate", CCM_CSCR, 10, 4);
+ clk[IMX1_CLK_CLK48M] = imx_clk_divider("clk48m", "spll_gate", CCM_CSCR, 26, 3);
+ clk[IMX1_CLK_PER1] = imx_clk_divider("per1", "spll_gate", CCM_PCDR, 0, 4);
+ clk[IMX1_CLK_PER2] = imx_clk_divider("per2", "spll_gate", CCM_PCDR, 4, 4);
+ clk[IMX1_CLK_PER3] = imx_clk_divider("per3", "spll_gate", CCM_PCDR, 16, 7);
+ clk[IMX1_CLK_CLKO] = imx_clk_mux("clko", CCM_CSCR, 29, 3, clko_sel_clks, ARRAY_SIZE(clko_sel_clks));
+ clk[IMX1_CLK_UART3_GATE] = imx_clk_gate("uart3_gate", "hclk", SCM_GCCR, 6);
+ clk[IMX1_CLK_SSI2_GATE] = imx_clk_gate("ssi2_gate", "hclk", SCM_GCCR, 5);
+ clk[IMX1_CLK_BROM_GATE] = imx_clk_gate("brom_gate", "hclk", SCM_GCCR, 4);
+ clk[IMX1_CLK_DMA_GATE] = imx_clk_gate("dma_gate", "hclk", SCM_GCCR, 3);
+ clk[IMX1_CLK_CSI_GATE] = imx_clk_gate("csi_gate", "hclk", SCM_GCCR, 2);
+ clk[IMX1_CLK_MMA_GATE] = imx_clk_gate("mma_gate", "hclk", SCM_GCCR, 1);
+ clk[IMX1_CLK_USBD_GATE] = imx_clk_gate("usbd_gate", "clk48m", SCM_GCCR, 0);
+
+ imx_check_clocks(clk, ARRAY_SIZE(clk));
+}
- clk[dummy] = imx_clk_fixed("dummy", 0);
- clk[clk32] = imx_clk_fixed("clk32", fref);
- clk[clk16m_ext] = imx_clk_fixed("clk16m_ext", 16000000);
- clk[clk16m] = imx_clk_gate("clk16m", "clk16m_ext", CCM_CSCR, 17);
- clk[clk32_premult] = imx_clk_fixed_factor("clk32_premult", "clk32", 512, 1);
- clk[prem] = imx_clk_mux("prem", CCM_CSCR, 16, 1, prem_sel_clks,
- ARRAY_SIZE(prem_sel_clks));
- clk[mpll] = imx_clk_pllv1("mpll", "clk32_premult", CCM_MPCTL0);
- clk[mpll_gate] = imx_clk_gate("mpll_gate", "mpll", CCM_CSCR, 0);
- clk[spll] = imx_clk_pllv1("spll", "prem", CCM_SPCTL0);
- clk[spll_gate] = imx_clk_gate("spll_gate", "spll", CCM_CSCR, 1);
- clk[mcu] = imx_clk_divider("mcu", "clk32_premult", CCM_CSCR, 15, 1);
- clk[fclk] = imx_clk_divider("fclk", "mpll_gate", CCM_CSCR, 15, 1);
- clk[hclk] = imx_clk_divider("hclk", "spll_gate", CCM_CSCR, 10, 4);
- clk[clk48m] = imx_clk_divider("clk48m", "spll_gate", CCM_CSCR, 26, 3);
- clk[per1] = imx_clk_divider("per1", "spll_gate", CCM_PCDR, 0, 4);
- clk[per2] = imx_clk_divider("per2", "spll_gate", CCM_PCDR, 4, 4);
- clk[per3] = imx_clk_divider("per3", "spll_gate", CCM_PCDR, 16, 7);
- clk[clko] = imx_clk_mux("clko", CCM_CSCR, 29, 3, clko_sel_clks,
- ARRAY_SIZE(clko_sel_clks));
- clk[uart3_gate] = imx_clk_gate("uart3_gate", "hclk", SCM_GCCR, 6);
- clk[ssi2_gate] = imx_clk_gate("ssi2_gate", "hclk", SCM_GCCR, 5);
- clk[brom_gate] = imx_clk_gate("brom_gate", "hclk", SCM_GCCR, 4);
- clk[dma_gate] = imx_clk_gate("dma_gate", "hclk", SCM_GCCR, 3);
- clk[csi_gate] = imx_clk_gate("csi_gate", "hclk", SCM_GCCR, 2);
- clk[mma_gate] = imx_clk_gate("mma_gate", "hclk", SCM_GCCR, 1);
- clk[usbd_gate] = imx_clk_gate("usbd_gate", "clk48m", SCM_GCCR, 0);
+int __init mx1_clocks_init(unsigned long fref)
+{
+ ccm = MX1_IO_ADDRESS(MX1_CCM_BASE_ADDR);
- for (i = 0; i < ARRAY_SIZE(clk); i++)
- if (IS_ERR(clk[i]))
- pr_err("imx1 clk %d: register failed with %ld\n",
- i, PTR_ERR(clk[i]));
+ _mx1_clocks_init(fref);
- clk_register_clkdev(clk[dma_gate], "ahb", "imx1-dma");
- clk_register_clkdev(clk[hclk], "ipg", "imx1-dma");
- clk_register_clkdev(clk[per1], "per", "imx-gpt.0");
- clk_register_clkdev(clk[hclk], "ipg", "imx-gpt.0");
- clk_register_clkdev(clk[per1], "per", "imx1-uart.0");
- clk_register_clkdev(clk[hclk], "ipg", "imx1-uart.0");
- clk_register_clkdev(clk[per1], "per", "imx1-uart.1");
- clk_register_clkdev(clk[hclk], "ipg", "imx1-uart.1");
- clk_register_clkdev(clk[per1], "per", "imx1-uart.2");
- clk_register_clkdev(clk[uart3_gate], "ipg", "imx1-uart.2");
- clk_register_clkdev(clk[hclk], NULL, "imx1-i2c.0");
- clk_register_clkdev(clk[per2], "per", "imx1-cspi.0");
- clk_register_clkdev(clk[dummy], "ipg", "imx1-cspi.0");
- clk_register_clkdev(clk[per2], "per", "imx1-cspi.1");
- clk_register_clkdev(clk[dummy], "ipg", "imx1-cspi.1");
- clk_register_clkdev(clk[per2], "per", "imx1-fb.0");
- clk_register_clkdev(clk[dummy], "ipg", "imx1-fb.0");
- clk_register_clkdev(clk[dummy], "ahb", "imx1-fb.0");
+ clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx-gpt.0");
+ clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx-gpt.0");
+ clk_register_clkdev(clk[IMX1_CLK_DMA_GATE], "ahb", "imx1-dma");
+ clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx1-dma");
+ clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx1-uart.0");
+ clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx1-uart.0");
+ clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx1-uart.1");
+ clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx1-uart.1");
+ clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx1-uart.2");
+ clk_register_clkdev(clk[IMX1_CLK_UART3_GATE], "ipg", "imx1-uart.2");
+ clk_register_clkdev(clk[IMX1_CLK_HCLK], NULL, "imx1-i2c.0");
+ clk_register_clkdev(clk[IMX1_CLK_PER2], "per", "imx1-cspi.0");
+ clk_register_clkdev(clk[IMX1_CLK_DUMMY], "ipg", "imx1-cspi.0");
+ clk_register_clkdev(clk[IMX1_CLK_PER2], "per", "imx1-cspi.1");
+ clk_register_clkdev(clk[IMX1_CLK_DUMMY], "ipg", "imx1-cspi.1");
+ clk_register_clkdev(clk[IMX1_CLK_PER2], "per", "imx1-fb.0");
+ clk_register_clkdev(clk[IMX1_CLK_DUMMY], "ipg", "imx1-fb.0");
+ clk_register_clkdev(clk[IMX1_CLK_DUMMY], "ahb", "imx1-fb.0");
mxc_timer_init(MX1_IO_ADDRESS(MX1_TIM1_BASE_ADDR), MX1_TIM1_INT);
return 0;
}
+
+static void __init mx1_clocks_init_dt(struct device_node *np)
+{
+ ccm = of_iomap(np, 0);
+ BUG_ON(!ccm);
+
+ _mx1_clocks_init(32768);
+
+ clk_data.clks = clk;
+ clk_data.clk_num = ARRAY_SIZE(clk);
+ of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+}
+CLK_OF_DECLARE(imx1_ccm, "fsl,imx1-ccm", mx1_clocks_init_dt);
projects / deliverable / linux.git / blobdiff