diff options
Diffstat (limited to 'drivers/clk/mxs/clk-imx28.c')
| -rw-r--r-- | drivers/clk/mxs/clk-imx28.c | 94 |
1 files changed, 50 insertions, 44 deletions
diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c index 12bc9dd977..c2faddb6f4 100644 --- a/drivers/clk/mxs/clk-imx28.c +++ b/drivers/clk/mxs/clk-imx28.c @@ -1,18 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix - * - * 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. */ #include <common.h> @@ -22,7 +10,8 @@ #include <io.h> #include <linux/clkdev.h> #include <linux/err.h> -#include <mach/imx28-regs.h> +#include <mach/mxs/imx28-regs.h> +#include <of_address.h> #include "clk.h" @@ -50,6 +39,9 @@ #define FRAC1 (regs + 0x01c0) #define CLKSEQ (regs + 0x01d0) +static void __iomem *digctrl; +#define DIGCTRL digctrl + static const char *sel_cpu[] = { "ref_cpu", "ref_xtal", }; static const char *sel_io0[] = { "ref_io0", "ref_xtal", }; static const char *sel_io1[] = { "ref_io1", "ref_xtal", }; @@ -68,14 +60,17 @@ enum imx28_clk { emi_xtal, lcdif_div, etm_div, ptp, saif0_div, saif1_div, clk32k_div, rtc, lradc, spdif_div, clk32k, pwm, uart, ssp0, ssp1, ssp2, ssp3, gpmi, spdif, emi, saif0, saif1, lcdif, etm, - fec_sleep, fec, can0, can1, usb0, usb1, usb0_phy, usb1_phy, enet_out, - lcdif_comp, clk_max + fec, can0, can1, usb0, usb1, usb0_phy, usb1_phy, enet_out, + lcdif_comp, fec_sleep, clk_max }; static struct clk *clks[clk_max]; +static struct clk_onecell_data clk_data; -static int __init mx28_clocks_init(void __iomem *regs) +static int __init mx28_clocks_init(struct device *dev, void __iomem *regs) { + struct device_node *dcnp; + clks[ref_xtal] = clk_fixed("ref_xtal", 24000000); clks[pll0] = mxs_clk_pll("pll0", "ref_xtal", PLL0CTRL0, 17, 480000000); clks[pll1] = mxs_clk_pll("pll1", "ref_xtal", PLL1CTRL0, 17, 480000000); @@ -132,6 +127,13 @@ static int __init mx28_clocks_init(void __iomem *regs) clks[lcdif_comp] = mxs_clk_lcdif("lcdif_comp", clks[ref_pix], clks[lcdif_div], clks[lcdif]); + dcnp = of_find_compatible_node(NULL, NULL, "fsl,imx28-digctl"); + if (dcnp) { + digctrl = of_iomap(dcnp, 0); + clks[usb0] = mxs_clk_gate("usb0", "usb0_phy", DIGCTRL, 2); + clks[usb1] = mxs_clk_gate("usb1", "usb1_phy", DIGCTRL, 16); + } + clk_set_rate(clks[ref_io0], 480000000); clk_set_rate(clks[ref_io1], 480000000); clk_set_parent(clks[ssp0_sel], clks[ref_io0]); @@ -143,30 +145,37 @@ static int __init mx28_clocks_init(void __iomem *regs) clk_set_rate(clks[ssp2], 96000000); clk_set_rate(clks[ssp3], 96000000); clk_set_parent(clks[lcdif_sel], clks[ref_pix]); - clk_enable(clks[enet_out]); - - clkdev_add_physbase(clks[ssp0], IMX_SSP0_BASE, NULL); - clkdev_add_physbase(clks[ssp1], IMX_SSP1_BASE, NULL); - clkdev_add_physbase(clks[ssp2], IMX_SSP2_BASE, NULL); - clkdev_add_physbase(clks[ssp3], IMX_SSP3_BASE, NULL); - clkdev_add_physbase(clks[fec], IMX_FEC0_BASE, NULL); - clkdev_add_physbase(clks[xbus], IMX_DBGUART_BASE, NULL); - clkdev_add_physbase(clks[hbus], IMX_OCOTP_BASE, NULL); - clkdev_add_physbase(clks[hbus], MXS_APBH_BASE, NULL); - clkdev_add_physbase(clks[uart], IMX_UART0_BASE, NULL); - clkdev_add_physbase(clks[uart], IMX_UART1_BASE, NULL); - clkdev_add_physbase(clks[uart], IMX_UART2_BASE, NULL); - clkdev_add_physbase(clks[uart], IMX_UART3_BASE, NULL); - clkdev_add_physbase(clks[uart], IMX_UART4_BASE, NULL); - clkdev_add_physbase(clks[gpmi], MXS_GPMI_BASE, NULL); - clkdev_add_physbase(clks[pwm], IMX_PWM_BASE, NULL); - if (IS_ENABLED(CONFIG_DRIVER_VIDEO_STM)) - clkdev_add_physbase(clks[lcdif_comp], IMX_FB_BASE, NULL); + clk_set_parent(clks[gpmi_sel], clks[ref_gpmi]); + + if (dev->of_node) { + clk_data.clks = clks; + clk_data.clk_num = clk_max; + of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, + &clk_data); + } else { + clkdev_add_physbase(clks[ssp0], IMX_SSP0_BASE, NULL); + clkdev_add_physbase(clks[ssp1], IMX_SSP1_BASE, NULL); + clkdev_add_physbase(clks[ssp2], IMX_SSP2_BASE, NULL); + clkdev_add_physbase(clks[ssp3], IMX_SSP3_BASE, NULL); + clkdev_add_physbase(clks[fec], IMX_FEC0_BASE, NULL); + clkdev_add_physbase(clks[xbus], IMX_DBGUART_BASE, NULL); + clkdev_add_physbase(clks[hbus], IMX_OCOTP_BASE, NULL); + clkdev_add_physbase(clks[hbus], MXS_APBH_BASE, NULL); + clkdev_add_physbase(clks[uart], IMX_UART0_BASE, NULL); + clkdev_add_physbase(clks[uart], IMX_UART1_BASE, NULL); + clkdev_add_physbase(clks[uart], IMX_UART2_BASE, NULL); + clkdev_add_physbase(clks[uart], IMX_UART3_BASE, NULL); + clkdev_add_physbase(clks[uart], IMX_UART4_BASE, NULL); + clkdev_add_physbase(clks[gpmi], MXS_GPMI_BASE, NULL); + clkdev_add_physbase(clks[pwm], IMX_PWM_BASE, NULL); + if (IS_ENABLED(CONFIG_DRIVER_VIDEO_STM)) + clkdev_add_physbase(clks[lcdif_comp], IMX_FB_BASE, NULL); + } return 0; } -static int imx28_ccm_probe(struct device_d *dev) +static int imx28_ccm_probe(struct device *dev) { struct resource *iores; void __iomem *regs; @@ -176,7 +185,7 @@ static int imx28_ccm_probe(struct device_d *dev) return PTR_ERR(iores); regs = IOMEM(iores->start); - mx28_clocks_init(regs); + mx28_clocks_init(dev, regs); return 0; } @@ -188,15 +197,12 @@ static __maybe_unused struct of_device_id imx28_ccm_dt_ids[] = { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, imx28_ccm_dt_ids); -static struct driver_d imx28_ccm_driver = { +static struct driver imx28_ccm_driver = { .probe = imx28_ccm_probe, .name = "imx28-clkctrl", .of_compatible = DRV_OF_COMPAT(imx28_ccm_dt_ids), }; -static int imx28_ccm_init(void) -{ - return platform_driver_register(&imx28_ccm_driver); -} -postcore_initcall(imx28_ccm_init); +postcore_platform_driver(imx28_ccm_driver); 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