2b27bdcc20
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation 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 you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 246 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.674189849@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
74 lines
3.2 KiB
C
74 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*/
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#include <linux/clkdev.h>
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#include <linux/clk-provider.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <dt-bindings/clock/imx1-clock.h>
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#include <soc/imx/timer.h>
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#include <asm/irq.h>
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#include "clk.h"
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#define MX1_CCM_BASE_ADDR 0x0021b000
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#define MX1_TIM1_BASE_ADDR 0x00220000
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#define MX1_TIM1_INT (NR_IRQS_LEGACY + 59)
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static const char *prem_sel_clks[] = { "clk32_premult", "clk16m", };
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static const char *clko_sel_clks[] = { "per1", "hclk", "clk48m", "clk16m",
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"prem", "fclk", };
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static struct clk *clk[IMX1_CLK_MAX];
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static struct clk_onecell_data clk_data;
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static void __iomem *ccm __initdata;
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#define CCM_CSCR (ccm + 0x0000)
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#define CCM_MPCTL0 (ccm + 0x0004)
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#define CCM_SPCTL0 (ccm + 0x000c)
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#define CCM_PCDR (ccm + 0x0020)
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#define SCM_GCCR (ccm + 0x0810)
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static void __init mx1_clocks_init_dt(struct device_node *np)
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{
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ccm = of_iomap(np, 0);
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BUG_ON(!ccm);
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clk[IMX1_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
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clk[IMX1_CLK_CLK32] = imx_obtain_fixed_clock("clk32", 32768);
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clk[IMX1_CLK_CLK16M_EXT] = imx_clk_fixed("clk16m_ext", 16000000);
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clk[IMX1_CLK_CLK16M] = imx_clk_gate("clk16m", "clk16m_ext", CCM_CSCR, 17);
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clk[IMX1_CLK_CLK32_PREMULT] = imx_clk_fixed_factor("clk32_premult", "clk32", 512, 1);
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clk[IMX1_CLK_PREM] = imx_clk_mux("prem", CCM_CSCR, 16, 1, prem_sel_clks, ARRAY_SIZE(prem_sel_clks));
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clk[IMX1_CLK_MPLL] = imx_clk_pllv1(IMX_PLLV1_IMX1, "mpll", "clk32_premult", CCM_MPCTL0);
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clk[IMX1_CLK_MPLL_GATE] = imx_clk_gate("mpll_gate", "mpll", CCM_CSCR, 0);
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clk[IMX1_CLK_SPLL] = imx_clk_pllv1(IMX_PLLV1_IMX1, "spll", "prem", CCM_SPCTL0);
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clk[IMX1_CLK_SPLL_GATE] = imx_clk_gate("spll_gate", "spll", CCM_CSCR, 1);
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clk[IMX1_CLK_MCU] = imx_clk_divider("mcu", "clk32_premult", CCM_CSCR, 15, 1);
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clk[IMX1_CLK_FCLK] = imx_clk_divider("fclk", "mpll_gate", CCM_CSCR, 15, 1);
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clk[IMX1_CLK_HCLK] = imx_clk_divider("hclk", "spll_gate", CCM_CSCR, 10, 4);
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clk[IMX1_CLK_CLK48M] = imx_clk_divider("clk48m", "spll_gate", CCM_CSCR, 26, 3);
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clk[IMX1_CLK_PER1] = imx_clk_divider("per1", "spll_gate", CCM_PCDR, 0, 4);
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clk[IMX1_CLK_PER2] = imx_clk_divider("per2", "spll_gate", CCM_PCDR, 4, 4);
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clk[IMX1_CLK_PER3] = imx_clk_divider("per3", "spll_gate", CCM_PCDR, 16, 7);
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clk[IMX1_CLK_CLKO] = imx_clk_mux("clko", CCM_CSCR, 29, 3, clko_sel_clks, ARRAY_SIZE(clko_sel_clks));
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clk[IMX1_CLK_UART3_GATE] = imx_clk_gate("uart3_gate", "hclk", SCM_GCCR, 6);
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clk[IMX1_CLK_SSI2_GATE] = imx_clk_gate("ssi2_gate", "hclk", SCM_GCCR, 5);
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clk[IMX1_CLK_BROM_GATE] = imx_clk_gate("brom_gate", "hclk", SCM_GCCR, 4);
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clk[IMX1_CLK_DMA_GATE] = imx_clk_gate("dma_gate", "hclk", SCM_GCCR, 3);
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clk[IMX1_CLK_CSI_GATE] = imx_clk_gate("csi_gate", "hclk", SCM_GCCR, 2);
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clk[IMX1_CLK_MMA_GATE] = imx_clk_gate("mma_gate", "hclk", SCM_GCCR, 1);
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clk[IMX1_CLK_USBD_GATE] = imx_clk_gate("usbd_gate", "clk48m", SCM_GCCR, 0);
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imx_check_clocks(clk, ARRAY_SIZE(clk));
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clk_data.clks = clk;
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clk_data.clk_num = ARRAY_SIZE(clk);
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of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
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}
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CLK_OF_DECLARE(imx1_ccm, "fsl,imx1-ccm", mx1_clocks_init_dt);
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