71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2007-2012
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Tom Cubie <tangliang@allwinnertech.com>
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*
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* (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/prcm.h>
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#include <asm/arch/gtbus.h>
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#include <asm/arch/sys_proto.h>
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__weak void clock_init_sec(void)
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{
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}
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__weak void gtbus_init(void)
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{
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}
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int clock_init(void)
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{
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#ifdef CONFIG_SPL_BUILD
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clock_init_safe();
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gtbus_init();
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#endif
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clock_init_uart();
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clock_init_sec();
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return 0;
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}
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/* These functions are shared between various SoCs so put them here. */
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#if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I
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int clock_twi_onoff(int port, int state)
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{
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struct sunxi_ccm_reg *const ccm =
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(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
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if (port == 5) {
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if (state)
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prcm_apb0_enable(
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PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C);
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else
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prcm_apb0_disable(
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PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C);
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return 0;
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}
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/* set the apb clock gate and reset for twi */
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if (state) {
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setbits_le32(&ccm->apb2_gate,
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CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port));
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setbits_le32(&ccm->apb2_reset_cfg,
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1 << (APB2_RESET_TWI_SHIFT + port));
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} else {
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clrbits_le32(&ccm->apb2_reset_cfg,
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1 << (APB2_RESET_TWI_SHIFT + port));
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clrbits_le32(&ccm->apb2_gate,
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CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port));
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}
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return 0;
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}
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#endif
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