UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers/clk/ti/clk-44xx.c

123 lines
4.3 KiB
C
Raw Normal View History

CLK: TI: add omap4 clock init file clk-44xx.c now contains the clock init functionality for omap4, including DT clock registration and adding of static clkdev entries. Signed-off-by: Tero Kristo <t-kristo@ti.com> Tested-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-07-18 20:57:51 +08:00
/*
* OMAP4 Clock init
*
* Copyright (C) 2013 Texas Instruments, Inc.
*
* Tero Kristo (t-kristo@ti.com)
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/list.h>
clk: ti: Drop use of clk-private.h These modules don't need to include clk-private.h. Replace the include with clk.h because these modules are clock consumers and also include clk-provider.h in clk/ti.h because struct clk_hw_omap has a struct clk_hw embedded in it. Cc: Tero Kristo <t-kristo@ti.com> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>
2015-01-23 07:40:20 +08:00
#include <linux/clk.h>
CLK: TI: add omap4 clock init file clk-44xx.c now contains the clock init functionality for omap4, including DT clock registration and adding of static clkdev entries. Signed-off-by: Tero Kristo <t-kristo@ti.com> Tested-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-07-18 20:57:51 +08:00
#include <linux/clkdev.h>
#include <linux/clk/ti.h>
clk: ti: move some public definitions to private header Several exported TI clock driver features are no longer needed outside the clock driver itself, thus move all of these to the driver private header file. Also, update some of the driver files to actually include this header. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-05 03:02:05 +08:00
#include "clock.h"
CLK: TI: add omap4 clock init file clk-44xx.c now contains the clock init functionality for omap4, including DT clock registration and adding of static clkdev entries. Signed-off-by: Tero Kristo <t-kristo@ti.com> Tested-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-07-18 20:57:51 +08:00
/*
* OMAP4 ABE DPLL default frequency. In OMAP4460 TRM version V, section
* "3.6.3.2.3 CM1_ABE Clock Generator" states that the "DPLL_ABE_X2_CLK
* must be set to 196.608 MHz" and hence, the DPLL locked frequency is
* half of this value.
*/
#define OMAP4_DPLL_ABE_DEFFREQ 98304000
/*
* OMAP4 USB DPLL default frequency. In OMAP4430 TRM version V, section
* "3.6.3.9.5 DPLL_USB Preferred Settings" shows that the preferred
* locked frequency for the USB DPLL is 960MHz.
*/
#define OMAP4_DPLL_USB_DEFFREQ 960000000
static struct ti_dt_clk omap44xx_clks[] = {
DT_CLK("smp_twd", NULL, "mpu_periphclk"),
DT_CLK("omapdss_dss", "ick", "dss_fck"),
DT_CLK("usbhs_omap", "fs_fck", "usb_host_fs_fck"),
DT_CLK("usbhs_omap", "hs_fck", "usb_host_hs_fck"),
DT_CLK("musb-omap2430", "ick", "usb_otg_hs_ick"),
DT_CLK("usbhs_omap", "usbtll_ick", "usb_tll_hs_ick"),
DT_CLK("usbhs_tll", "usbtll_ick", "usb_tll_hs_ick"),
DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
DT_CLK("omap_i2c.4", "ick", "dummy_ck"),
DT_CLK(NULL, "mailboxes_ick", "dummy_ck"),
DT_CLK("omap_hsmmc.0", "ick", "dummy_ck"),
DT_CLK("omap_hsmmc.1", "ick", "dummy_ck"),
DT_CLK("omap_hsmmc.2", "ick", "dummy_ck"),
DT_CLK("omap_hsmmc.3", "ick", "dummy_ck"),
DT_CLK("omap_hsmmc.4", "ick", "dummy_ck"),
DT_CLK("omap-mcbsp.1", "ick", "dummy_ck"),
DT_CLK("omap-mcbsp.2", "ick", "dummy_ck"),
DT_CLK("omap-mcbsp.3", "ick", "dummy_ck"),
DT_CLK("omap-mcbsp.4", "ick", "dummy_ck"),
DT_CLK("omap2_mcspi.1", "ick", "dummy_ck"),
DT_CLK("omap2_mcspi.2", "ick", "dummy_ck"),
DT_CLK("omap2_mcspi.3", "ick", "dummy_ck"),
DT_CLK("omap2_mcspi.4", "ick", "dummy_ck"),
DT_CLK(NULL, "uart1_ick", "dummy_ck"),
DT_CLK(NULL, "uart2_ick", "dummy_ck"),
DT_CLK(NULL, "uart3_ick", "dummy_ck"),
DT_CLK(NULL, "uart4_ick", "dummy_ck"),
DT_CLK("usbhs_omap", "usbhost_ick", "dummy_ck"),
DT_CLK("usbhs_omap", "usbtll_fck", "dummy_ck"),
DT_CLK("usbhs_tll", "usbtll_fck", "dummy_ck"),
DT_CLK("omap_wdt", "ick", "dummy_ck"),
DT_CLK(NULL, "timer_32k_ck", "sys_32k_ck"),
DT_CLK("4a318000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("48032000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("48034000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("48036000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("4803e000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("48086000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("48088000.timer", "timer_sys_ck", "sys_clkin_ck"),
DT_CLK("40138000.timer", "timer_sys_ck", "syc_clk_div_ck"),
DT_CLK("4013a000.timer", "timer_sys_ck", "syc_clk_div_ck"),
DT_CLK("4013c000.timer", "timer_sys_ck", "syc_clk_div_ck"),
DT_CLK("4013e000.timer", "timer_sys_ck", "syc_clk_div_ck"),
DT_CLK(NULL, "cpufreq_ck", "dpll_mpu_ck"),
{ .node_name = NULL },
};
int __init omap4xxx_dt_clk_init(void)
{
int rc;
struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll;
ti_dt_clocks_register(omap44xx_clks);
omap2_clk_disable_autoidle_all();
clk: ti: omap4: cleanup unnecessary clock aliases Cleanup any unnecessary DT_CLK() alias entries from the OMAP4 clock file. Most of these are now handled dynamically by the driver code. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
2016-03-22 22:10:55 +08:00
ti_clk_add_aliases();
CLK: TI: add omap4 clock init file clk-44xx.c now contains the clock init functionality for omap4, including DT clock registration and adding of static clkdev entries. Signed-off-by: Tero Kristo <t-kristo@ti.com> Tested-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-07-18 20:57:51 +08:00
/*
* Lock USB DPLL on OMAP4 devices so that the L3INIT power
* domain can transition to retention state when not in use.
*/
usb_dpll = clk_get_sys(NULL, "dpll_usb_ck");
rc = clk_set_rate(usb_dpll, OMAP4_DPLL_USB_DEFFREQ);
if (rc)
pr_err("%s: failed to configure USB DPLL!\n", __func__);
/*
* On OMAP4460 the ABE DPLL fails to turn on if in idle low-power
* state when turning the ABE clock domain. Workaround this by
* locking the ABE DPLL on boot.
* Lock the ABE DPLL in any case to avoid issues with audio.
*/
abe_dpll_ref = clk_get_sys(NULL, "abe_dpll_refclk_mux_ck");
sys_32k_ck = clk_get_sys(NULL, "sys_32k_ck");
rc = clk_set_parent(abe_dpll_ref, sys_32k_ck);
abe_dpll = clk_get_sys(NULL, "dpll_abe_ck");
if (!rc)
rc = clk_set_rate(abe_dpll, OMAP4_DPLL_ABE_DEFFREQ);
if (rc)
pr_err("%s: failed to configure ABE DPLL!\n", __func__);
return 0;
}