1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2007-2012 4 * Allwinner Technology Co., Ltd. <www.allwinnertech.com> 5 * Tom Cubie <tangliang@allwinnertech.com> 6 * 7 * (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net> 8 */ 9 10 #include <common.h> 11 #include <asm/io.h> 12 #include <asm/arch/clock.h> 13 #include <asm/arch/prcm.h> 14 #include <asm/arch/gtbus.h> 15 #include <asm/arch/sys_proto.h> 16 clock_init_sec(void)17__weak void clock_init_sec(void) 18 { 19 } 20 gtbus_init(void)21__weak void gtbus_init(void) 22 { 23 } 24 clock_init(void)25int clock_init(void) 26 { 27 #ifdef CONFIG_SPL_BUILD 28 clock_init_safe(); 29 gtbus_init(); 30 #endif 31 clock_init_uart(); 32 clock_init_sec(); 33 34 return 0; 35 } 36 37 /* These functions are shared between various SoCs so put them here. */ 38 #if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I clock_twi_onoff(int port,int state)39int clock_twi_onoff(int port, int state) 40 { 41 struct sunxi_ccm_reg *const ccm = 42 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 43 44 if (port == 5) { 45 if (state) 46 prcm_apb0_enable( 47 PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C); 48 else 49 prcm_apb0_disable( 50 PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C); 51 return 0; 52 } 53 54 /* set the apb clock gate and reset for twi */ 55 if (state) { 56 setbits_le32(&ccm->apb2_gate, 57 CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port)); 58 setbits_le32(&ccm->apb2_reset_cfg, 59 1 << (APB2_RESET_TWI_SHIFT + port)); 60 } else { 61 clrbits_le32(&ccm->apb2_reset_cfg, 62 1 << (APB2_RESET_TWI_SHIFT + port)); 63 clrbits_le32(&ccm->apb2_gate, 64 CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port)); 65 } 66 67 return 0; 68 } 69 #endif 70