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WSL2-Linux-Kernel/drivers/clk/mxs/clk-imx23.c

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clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
/*
* Copyright 2012 Freescale Semiconductor, Inc.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
clk: mxs: clk-imx23: Include <linux/clk/mxs.h> Fix the following sparse warning: drivers/clk/mxs/clk-imx23.c:102:12: warning: symbol 'mx23_clocks_init' was not declared. Should it be static? Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-07-16 17:33:43 +04:00
#include <linux/clk/mxs.h>
clk: mxs: Include clk.h in C files that use it Clock provider drivers generally shouldn't include clk.h because it's the consumer API. The clk.h include is being included in all mxs files because it's part of mxs/clk.h even though nothing actually requires it in that file. Move the clk.h include to the C files that are actually using it and remove the clk.h include from the header file. The clkdev.h include isn't used either, so drop it too. Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-20 01:00:46 +03:00
#include <linux/clk.h>
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
#include <linux/clk-provider.h>
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
clk: mxs: replace imx23 clk_register_clkdev with clock DT lookup It really becomes a maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx23 client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 17:36:30 +04:00
#include <linux/of.h>
clk: mxs: get base address from device tree Instead of using the static definitions, get clkctrl and digctl base addresses with mapping from device tree. Use macro on variable is not nice, but it's done here to save huge pointless diff stat. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:11:02 +04:00
#include <linux/of_address.h>
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
#include "clk.h"
clk: mxs: get base address from device tree Instead of using the static definitions, get clkctrl and digctl base addresses with mapping from device tree. Use macro on variable is not nice, but it's done here to save huge pointless diff stat. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:11:02 +04:00
static void __iomem *clkctrl;
static void __iomem *digctrl;
#define CLKCTRL clkctrl
#define DIGCTRL digctrl
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
#define PLLCTRL0 (CLKCTRL + 0x0000)
#define CPU (CLKCTRL + 0x0020)
#define HBUS (CLKCTRL + 0x0030)
#define XBUS (CLKCTRL + 0x0040)
#define XTAL (CLKCTRL + 0x0050)
#define PIX (CLKCTRL + 0x0060)
#define SSP (CLKCTRL + 0x0070)
#define GPMI (CLKCTRL + 0x0080)
#define SPDIF (CLKCTRL + 0x0090)
#define EMI (CLKCTRL + 0x00a0)
#define SAIF (CLKCTRL + 0x00c0)
#define TV (CLKCTRL + 0x00d0)
#define ETM (CLKCTRL + 0x00e0)
#define FRAC (CLKCTRL + 0x00f0)
#define CLKSEQ (CLKCTRL + 0x0110)
#define BP_CPU_INTERRUPT_WAIT 12
#define BP_CLKSEQ_BYPASS_SAIF 0
#define BP_CLKSEQ_BYPASS_SSP 5
#define BP_SAIF_DIV_FRAC_EN 16
#define BP_FRAC_IOFRAC 24
static void __init clk_misc_init(void)
{
u32 val;
/* Gate off cpu clock in WFI for power saving */
clk: mxs: remove the use of mach level IO accessor It removes the use of mach level IO accessor __mxs_setl/clrl, and hence removes mach header inclusion from clock driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:22:55 +04:00
writel_relaxed(1 << BP_CPU_INTERRUPT_WAIT, CPU + SET);
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
/* Clear BYPASS for SAIF */
clk: mxs: remove the use of mach level IO accessor It removes the use of mach level IO accessor __mxs_setl/clrl, and hence removes mach header inclusion from clock driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:22:55 +04:00
writel_relaxed(1 << BP_CLKSEQ_BYPASS_SAIF, CLKSEQ + CLR);
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
/* SAIF has to use frac div for functional operation */
val = readl_relaxed(SAIF);
val |= 1 << BP_SAIF_DIV_FRAC_EN;
writel_relaxed(val, SAIF);
/*
* Source ssp clock from ref_io than ref_xtal,
* as ref_xtal only provides 24 MHz as maximum.
*/
clk: mxs: remove the use of mach level IO accessor It removes the use of mach level IO accessor __mxs_setl/clrl, and hence removes mach header inclusion from clock driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:22:55 +04:00
writel_relaxed(1 << BP_CLKSEQ_BYPASS_SSP, CLKSEQ + CLR);
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
/*
* 480 MHz seems too high to be ssp clock source directly,
* so set frac to get a 288 MHz ref_io.
*/
clk: mxs: remove the use of mach level IO accessor It removes the use of mach level IO accessor __mxs_setl/clrl, and hence removes mach header inclusion from clock driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:22:55 +04:00
writel_relaxed(0x3f << BP_FRAC_IOFRAC, FRAC + CLR);
writel_relaxed(30 << BP_FRAC_IOFRAC, FRAC + SET);
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
}
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
static const char *const sel_pll[] __initconst = { "pll", "ref_xtal", };
static const char *const sel_cpu[] __initconst = { "ref_cpu", "ref_xtal", };
static const char *const sel_pix[] __initconst = { "ref_pix", "ref_xtal", };
static const char *const sel_io[] __initconst = { "ref_io", "ref_xtal", };
static const char *const cpu_sels[] __initconst = { "cpu_pll", "cpu_xtal", };
static const char *const emi_sels[] __initconst = { "emi_pll", "emi_xtal", };
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
enum imx23_clk {
ref_xtal, pll, ref_cpu, ref_emi, ref_pix, ref_io, saif_sel,
lcdif_sel, gpmi_sel, ssp_sel, emi_sel, cpu, etm_sel, cpu_pll,
cpu_xtal, hbus, xbus, lcdif_div, ssp_div, gpmi_div, emi_pll,
emi_xtal, etm_div, saif_div, clk32k_div, rtc, adc, spdif_div,
clk32k, dri, pwm, filt, uart, ssp, gpmi, spdif, emi, saif,
clk: mxs: Use a better name for the USB PHY clock Use a better name for the USB PHY clock. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-22 20:54:55 +04:00
lcdif, etm, usb, usb_phy,
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
clk_max
};
static struct clk *clks[clk_max];
clk: mxs: replace imx23 clk_register_clkdev with clock DT lookup It really becomes a maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx23 client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 17:36:30 +04:00
static struct clk_onecell_data clk_data;
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
static enum imx23_clk clks_init_on[] __initdata = {
cpu, hbus, xbus, emi, uart,
};
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
static void __init mx23_clocks_init(struct device_node *np)
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
{
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
struct device_node *dcnp;
clk: mxs: Index is always positive Fix the following warnings when building with W=1 option: drivers/clk/mxs/clk-imx23.c: In function 'mx23_clocks_init': drivers/clk/mxs/clk-imx23.c:149:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] drivers/clk/mxs/clk-imx23.c:165:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] ... drivers/clk/mxs/clk-imx28.c: In function 'mx28_clocks_init': drivers/clk/mxs/clk-imx28.c:227:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] drivers/clk/mxs/clk-imx28.c:244:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-01-08 05:38:55 +04:00
u32 i;
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
dcnp = of_find_compatible_node(NULL, NULL, "fsl,imx23-digctl");
digctrl = of_iomap(dcnp, 0);
clk: mxs: get base address from device tree Instead of using the static definitions, get clkctrl and digctl base addresses with mapping from device tree. Use macro on variable is not nice, but it's done here to save huge pointless diff stat. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:11:02 +04:00
WARN_ON(!digctrl);
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
of_node_put(dcnp);
clk: mxs: get base address from device tree Instead of using the static definitions, get clkctrl and digctl base addresses with mapping from device tree. Use macro on variable is not nice, but it's done here to save huge pointless diff stat. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:11:02 +04:00
clkctrl = of_iomap(np, 0);
WARN_ON(!clkctrl);
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
clk_misc_init();
clks[ref_xtal] = mxs_clk_fixed("ref_xtal", 24000000);
clks[pll] = mxs_clk_pll("pll", "ref_xtal", PLLCTRL0, 16, 480000000);
clks[ref_cpu] = mxs_clk_ref("ref_cpu", "pll", FRAC, 0);
clks[ref_emi] = mxs_clk_ref("ref_emi", "pll", FRAC, 1);
clks[ref_pix] = mxs_clk_ref("ref_pix", "pll", FRAC, 2);
clks[ref_io] = mxs_clk_ref("ref_io", "pll", FRAC, 3);
clks[saif_sel] = mxs_clk_mux("saif_sel", CLKSEQ, 0, 1, sel_pll, ARRAY_SIZE(sel_pll));
clks[lcdif_sel] = mxs_clk_mux("lcdif_sel", CLKSEQ, 1, 1, sel_pix, ARRAY_SIZE(sel_pix));
clks[gpmi_sel] = mxs_clk_mux("gpmi_sel", CLKSEQ, 4, 1, sel_io, ARRAY_SIZE(sel_io));
clks[ssp_sel] = mxs_clk_mux("ssp_sel", CLKSEQ, 5, 1, sel_io, ARRAY_SIZE(sel_io));
clks[emi_sel] = mxs_clk_mux("emi_sel", CLKSEQ, 6, 1, emi_sels, ARRAY_SIZE(emi_sels));
clks[cpu] = mxs_clk_mux("cpu", CLKSEQ, 7, 1, cpu_sels, ARRAY_SIZE(cpu_sels));
clks[etm_sel] = mxs_clk_mux("etm_sel", CLKSEQ, 8, 1, sel_cpu, ARRAY_SIZE(sel_cpu));
clks[cpu_pll] = mxs_clk_div("cpu_pll", "ref_cpu", CPU, 0, 6, 28);
clks[cpu_xtal] = mxs_clk_div("cpu_xtal", "ref_xtal", CPU, 16, 10, 29);
clks[hbus] = mxs_clk_div("hbus", "cpu", HBUS, 0, 5, 29);
clks[xbus] = mxs_clk_div("xbus", "ref_xtal", XBUS, 0, 10, 31);
clks[lcdif_div] = mxs_clk_div("lcdif_div", "lcdif_sel", PIX, 0, 12, 29);
clks[ssp_div] = mxs_clk_div("ssp_div", "ssp_sel", SSP, 0, 9, 29);
clks[gpmi_div] = mxs_clk_div("gpmi_div", "gpmi_sel", GPMI, 0, 10, 29);
clks[emi_pll] = mxs_clk_div("emi_pll", "ref_emi", EMI, 0, 6, 28);
clks[emi_xtal] = mxs_clk_div("emi_xtal", "ref_xtal", EMI, 8, 4, 29);
clks[etm_div] = mxs_clk_div("etm_div", "etm_sel", ETM, 0, 6, 29);
clks[saif_div] = mxs_clk_frac("saif_div", "saif_sel", SAIF, 0, 16, 29);
clks[clk32k_div] = mxs_clk_fixed_factor("clk32k_div", "ref_xtal", 1, 750);
clks[rtc] = mxs_clk_fixed_factor("rtc", "ref_xtal", 1, 768);
clks[adc] = mxs_clk_fixed_factor("adc", "clk32k", 1, 16);
clks[spdif_div] = mxs_clk_fixed_factor("spdif_div", "pll", 1, 4);
clks[clk32k] = mxs_clk_gate("clk32k", "clk32k_div", XTAL, 26);
clks[dri] = mxs_clk_gate("dri", "ref_xtal", XTAL, 28);
clks[pwm] = mxs_clk_gate("pwm", "ref_xtal", XTAL, 29);
clks[filt] = mxs_clk_gate("filt", "ref_xtal", XTAL, 30);
clks[uart] = mxs_clk_gate("uart", "ref_xtal", XTAL, 31);
clks[ssp] = mxs_clk_gate("ssp", "ssp_div", SSP, 31);
clks[gpmi] = mxs_clk_gate("gpmi", "gpmi_div", GPMI, 31);
clks[spdif] = mxs_clk_gate("spdif", "spdif_div", SPDIF, 31);
clks[emi] = mxs_clk_gate("emi", "emi_sel", EMI, 31);
clks[saif] = mxs_clk_gate("saif", "saif_div", SAIF, 31);
clks[lcdif] = mxs_clk_gate("lcdif", "lcdif_div", PIX, 31);
clks[etm] = mxs_clk_gate("etm", "etm_div", ETM, 31);
clk: mxs: Use a better name for the USB PHY clock Use a better name for the USB PHY clock. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-22 20:54:55 +04:00
clks[usb] = mxs_clk_gate("usb", "usb_phy", DIGCTRL, 2);
clks[usb_phy] = clk_register_gate(NULL, "usb_phy", "pll", 0, PLLCTRL0, 18, 0, &mxs_lock);
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
for (i = 0; i < ARRAY_SIZE(clks); i++)
if (IS_ERR(clks[i])) {
pr_err("i.MX23 clk %d: register failed with %ld\n",
i, PTR_ERR(clks[i]));
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
return;
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
}
clk: mxs: get base address from device tree Instead of using the static definitions, get clkctrl and digctl base addresses with mapping from device tree. Use macro on variable is not nice, but it's done here to save huge pointless diff stat. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-03-26 17:11:02 +04:00
clk_data.clks = clks;
clk_data.clk_num = ARRAY_SIZE(clks);
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
clk: mxs: replace imx23 clk_register_clkdev with clock DT lookup It really becomes a maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx23 client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 17:36:30 +04:00
clk: mxs: add clock support for imx23 Add imx23 clock support based on common clk framework. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-04-28 20:02:35 +04:00
for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
clk_prepare_enable(clks[clks_init_on[i]]);
}
ARM: mxs: remove custom .init_time hook This patch converts clk-imx2[38] clocksource_of_init compatible init associated with fsl,imx2[38]-clkctrl. With arch/arm calling of_clk_init(NULL) from time_init(), we can now also remove custom .init_time hooks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-04 15:16:01 +04:00
CLK_OF_DECLARE(imx23_clkctrl, "fsl,imx23-clkctrl", mx23_clocks_init);