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ARM: OMAP5: Add functions to enable and disable USB clocks

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Added functions to enable and disable USB clocks which can be invoked
during USB init and  USB exit respectively.

Cc: Roger Quadros <rogerq@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Kishon Vijay Abraham I 2015-08-19 16:16:25 +05:30 committed by Tom Rini
parent 7ba792c044
commit ca5a0f172e
2 changed files with 101 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

97
arch/arm/cpu/armv7/omap5/hw_data.c
View File

@ -622,6 +622,103 @@ void disable_edma3_clocks(void)
}
#endif
#ifdef CONFIG_USB_DWC3
void enable_usb_clocks(int index)
{
u32 cm_l3init_usb_otg_ss_clkctrl = 0;
if (index == 0) {
cm_l3init_usb_otg_ss_clkctrl =
(*prcm)->cm_l3init_usb_otg_ss1_clkctrl;
/* Enable 960 MHz clock for dwc3 */
setbits_le32((*prcm)->cm_l3init_usb_otg_ss1_clkctrl,
OPTFCLKEN_REFCLK960M);
/* Enable 32 KHz clock for dwc3 */
setbits_le32((*prcm)->cm_coreaon_usb_phy1_core_clkctrl,
USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
} else if (index == 1) {
cm_l3init_usb_otg_ss_clkctrl =
(*prcm)->cm_l3init_usb_otg_ss2_clkctrl;
/* Enable 960 MHz clock for dwc3 */
setbits_le32((*prcm)->cm_l3init_usb_otg_ss2_clkctrl,
OPTFCLKEN_REFCLK960M);
/* Enable 32 KHz clock for dwc3 */
setbits_le32((*prcm)->cm_coreaon_usb_phy2_core_clkctrl,
USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
/* Enable 60 MHz clock for USB2PHY2 */
setbits_le32((*prcm)->cm_coreaon_l3init_60m_gfclk_clkctrl,
L3INIT_CLKCTRL_OPTFCLKEN_60M_GFCLK);
}
u32 const clk_domains_usb[] = {
0
};
u32 const clk_modules_hw_auto_usb[] = {
(*prcm)->cm_l3init_ocp2scp1_clkctrl,
cm_l3init_usb_otg_ss_clkctrl,
0
};
u32 const clk_modules_explicit_en_usb[] = {
0
};
do_enable_clocks(clk_domains_usb,
clk_modules_hw_auto_usb,
clk_modules_explicit_en_usb,
1);
}
void disable_usb_clocks(int index)
{
u32 cm_l3init_usb_otg_ss_clkctrl = 0;
if (index == 0) {
cm_l3init_usb_otg_ss_clkctrl =
(*prcm)->cm_l3init_usb_otg_ss1_clkctrl;
/* Disable 960 MHz clock for dwc3 */
clrbits_le32((*prcm)->cm_l3init_usb_otg_ss1_clkctrl,
OPTFCLKEN_REFCLK960M);
/* Disable 32 KHz clock for dwc3 */
clrbits_le32((*prcm)->cm_coreaon_usb_phy1_core_clkctrl,
USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
} else if (index == 1) {
cm_l3init_usb_otg_ss_clkctrl =
(*prcm)->cm_l3init_usb_otg_ss2_clkctrl;
/* Disable 960 MHz clock for dwc3 */
clrbits_le32((*prcm)->cm_l3init_usb_otg_ss2_clkctrl,
OPTFCLKEN_REFCLK960M);
/* Disable 32 KHz clock for dwc3 */
clrbits_le32((*prcm)->cm_coreaon_usb_phy2_core_clkctrl,
USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
/* Disable 60 MHz clock for USB2PHY2 */
clrbits_le32((*prcm)->cm_coreaon_l3init_60m_gfclk_clkctrl,
L3INIT_CLKCTRL_OPTFCLKEN_60M_GFCLK);
}
u32 const clk_domains_usb[] = {
0
};
u32 const clk_modules_disable[] = {
(*prcm)->cm_l3init_ocp2scp1_clkctrl,
cm_l3init_usb_otg_ss_clkctrl,
0
};
do_disable_clocks(clk_domains_usb,
clk_modules_disable,
1);
}
#endif
const struct ctrl_ioregs ioregs_omap5430 = {
.ctrl_ddrch = DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
.ctrl_lpddr2ch = DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,

4
arch/arm/include/asm/omap_common.h
View File

@ -592,6 +592,10 @@ u32 omap_ddr_clk(void);
u32 get_sys_clk_index(void);
void enable_basic_clocks(void);
void enable_basic_uboot_clocks(void);
void enable_usb_clocks(int index);
void disable_usb_clocks(int index);
void scale_vcores(struct vcores_data const *);
u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic);
void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic);