mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
23baf66f25
Add some spaces around operators. Signed-off-by: Olliver Schinagl <o.schinagl@ultimaker.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
238 lines
6.3 KiB
C
238 lines
6.3 KiB
C
/*
|
|
* sun4i, sun5i and sun7i specific clock code
|
|
*
|
|
* (C) Copyright 2007-2012
|
|
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
|
|
* Tom Cubie <tangliang@allwinnertech.com>
|
|
*
|
|
* (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/gpio.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
|
|
#ifdef CONFIG_SPL_BUILD
|
|
void clock_init_safe(void)
|
|
{
|
|
struct sunxi_ccm_reg * const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
|
|
/* Set safe defaults until PMU is configured */
|
|
writel(AXI_DIV_1 << AXI_DIV_SHIFT |
|
|
AHB_DIV_2 << AHB_DIV_SHIFT |
|
|
APB0_DIV_1 << APB0_DIV_SHIFT |
|
|
CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
|
|
&ccm->cpu_ahb_apb0_cfg);
|
|
writel(PLL1_CFG_DEFAULT, &ccm->pll1_cfg);
|
|
sdelay(200);
|
|
writel(AXI_DIV_1 << AXI_DIV_SHIFT |
|
|
AHB_DIV_2 << AHB_DIV_SHIFT |
|
|
APB0_DIV_1 << APB0_DIV_SHIFT |
|
|
CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT,
|
|
&ccm->cpu_ahb_apb0_cfg);
|
|
#ifdef CONFIG_MACH_SUN7I
|
|
setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_DMA);
|
|
#endif
|
|
writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg);
|
|
#ifdef CONFIG_SUNXI_AHCI
|
|
setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_SATA);
|
|
setbits_le32(&ccm->pll6_cfg, 0x1 << CCM_PLL6_CTRL_SATA_EN_SHIFT);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
void clock_init_uart(void)
|
|
{
|
|
struct sunxi_ccm_reg *const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
|
|
/* uart clock source is apb1 */
|
|
writel(APB1_CLK_SRC_OSC24M|
|
|
APB1_CLK_RATE_N_1|
|
|
APB1_CLK_RATE_M(1),
|
|
&ccm->apb1_clk_div_cfg);
|
|
|
|
/* open the clock for uart */
|
|
setbits_le32(&ccm->apb1_gate,
|
|
CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT+CONFIG_CONS_INDEX - 1));
|
|
}
|
|
|
|
int clock_twi_onoff(int port, int state)
|
|
{
|
|
struct sunxi_ccm_reg *const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
|
|
/* set the apb clock gate for twi */
|
|
if (state)
|
|
setbits_le32(&ccm->apb1_gate,
|
|
CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port));
|
|
else
|
|
clrbits_le32(&ccm->apb1_gate,
|
|
CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port));
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_SPL_BUILD
|
|
#define PLL1_CFG(N, K, M, P) ( 1 << CCM_PLL1_CFG_ENABLE_SHIFT | \
|
|
0 << CCM_PLL1_CFG_VCO_RST_SHIFT | \
|
|
8 << CCM_PLL1_CFG_VCO_BIAS_SHIFT | \
|
|
0 << CCM_PLL1_CFG_PLL4_EXCH_SHIFT | \
|
|
16 << CCM_PLL1_CFG_BIAS_CUR_SHIFT | \
|
|
(P)<< CCM_PLL1_CFG_DIVP_SHIFT | \
|
|
2 << CCM_PLL1_CFG_LCK_TMR_SHIFT | \
|
|
(N)<< CCM_PLL1_CFG_FACTOR_N_SHIFT | \
|
|
(K)<< CCM_PLL1_CFG_FACTOR_K_SHIFT | \
|
|
0 << CCM_PLL1_CFG_SIG_DELT_PAT_IN_SHIFT | \
|
|
0 << CCM_PLL1_CFG_SIG_DELT_PAT_EN_SHIFT | \
|
|
(M)<< CCM_PLL1_CFG_FACTOR_M_SHIFT)
|
|
|
|
static struct {
|
|
u32 pll1_cfg;
|
|
unsigned int freq;
|
|
} pll1_para[] = {
|
|
/* This array must be ordered by frequency. */
|
|
{ PLL1_CFG(31, 1, 0, 0), 1488000000},
|
|
{ PLL1_CFG(30, 1, 0, 0), 1440000000},
|
|
{ PLL1_CFG(29, 1, 0, 0), 1392000000},
|
|
{ PLL1_CFG(28, 1, 0, 0), 1344000000},
|
|
{ PLL1_CFG(27, 1, 0, 0), 1296000000},
|
|
{ PLL1_CFG(26, 1, 0, 0), 1248000000},
|
|
{ PLL1_CFG(25, 1, 0, 0), 1200000000},
|
|
{ PLL1_CFG(24, 1, 0, 0), 1152000000},
|
|
{ PLL1_CFG(23, 1, 0, 0), 1104000000},
|
|
{ PLL1_CFG(22, 1, 0, 0), 1056000000},
|
|
{ PLL1_CFG(21, 1, 0, 0), 1008000000},
|
|
{ PLL1_CFG(20, 1, 0, 0), 960000000 },
|
|
{ PLL1_CFG(19, 1, 0, 0), 912000000 },
|
|
{ PLL1_CFG(16, 1, 0, 0), 768000000 },
|
|
/* Final catchall entry 384MHz*/
|
|
{ PLL1_CFG(16, 0, 0, 0), 0 },
|
|
|
|
};
|
|
|
|
void clock_set_pll1(unsigned int hz)
|
|
{
|
|
int i = 0;
|
|
int axi, ahb, apb0;
|
|
struct sunxi_ccm_reg * const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
|
|
/* Find target frequency */
|
|
while (pll1_para[i].freq > hz)
|
|
i++;
|
|
|
|
hz = pll1_para[i].freq;
|
|
if (! hz)
|
|
hz = 384000000;
|
|
|
|
/* Calculate system clock divisors */
|
|
axi = DIV_ROUND_UP(hz, 432000000); /* Max 450MHz */
|
|
ahb = DIV_ROUND_UP(hz/axi, 204000000); /* Max 250MHz */
|
|
apb0 = 2; /* Max 150MHz */
|
|
|
|
printf("CPU: %uHz, AXI/AHB/APB: %d/%d/%d\n", hz, axi, ahb, apb0);
|
|
|
|
/* Map divisors to register values */
|
|
axi = axi - 1;
|
|
if (ahb > 4)
|
|
ahb = 3;
|
|
else if (ahb > 2)
|
|
ahb = 2;
|
|
else if (ahb > 1)
|
|
ahb = 1;
|
|
else
|
|
ahb = 0;
|
|
|
|
apb0 = apb0 - 1;
|
|
|
|
/* Switch to 24MHz clock while changing PLL1 */
|
|
writel(AXI_DIV_1 << AXI_DIV_SHIFT |
|
|
AHB_DIV_2 << AHB_DIV_SHIFT |
|
|
APB0_DIV_1 << APB0_DIV_SHIFT |
|
|
CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
|
|
&ccm->cpu_ahb_apb0_cfg);
|
|
sdelay(20);
|
|
|
|
/* Configure sys clock divisors */
|
|
writel(axi << AXI_DIV_SHIFT |
|
|
ahb << AHB_DIV_SHIFT |
|
|
apb0 << APB0_DIV_SHIFT |
|
|
CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
|
|
&ccm->cpu_ahb_apb0_cfg);
|
|
|
|
/* Configure PLL1 at the desired frequency */
|
|
writel(pll1_para[i].pll1_cfg, &ccm->pll1_cfg);
|
|
sdelay(200);
|
|
|
|
/* Switch CPU to PLL1 */
|
|
writel(axi << AXI_DIV_SHIFT |
|
|
ahb << AHB_DIV_SHIFT |
|
|
apb0 << APB0_DIV_SHIFT |
|
|
CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT,
|
|
&ccm->cpu_ahb_apb0_cfg);
|
|
sdelay(20);
|
|
}
|
|
#endif
|
|
|
|
void clock_set_pll3(unsigned int clk)
|
|
{
|
|
struct sunxi_ccm_reg * const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
|
|
if (clk == 0) {
|
|
clrbits_le32(&ccm->pll3_cfg, CCM_PLL3_CTRL_EN);
|
|
return;
|
|
}
|
|
|
|
/* PLL3 rate = 3000000 * m */
|
|
writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE |
|
|
CCM_PLL3_CTRL_M(clk / 3000000), &ccm->pll3_cfg);
|
|
}
|
|
|
|
unsigned int clock_get_pll3(void)
|
|
{
|
|
struct sunxi_ccm_reg *const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
uint32_t rval = readl(&ccm->pll3_cfg);
|
|
int m = ((rval & CCM_PLL3_CTRL_M_MASK) >> CCM_PLL3_CTRL_M_SHIFT);
|
|
return 3000000 * m;
|
|
}
|
|
|
|
unsigned int clock_get_pll5p(void)
|
|
{
|
|
struct sunxi_ccm_reg *const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
uint32_t rval = readl(&ccm->pll5_cfg);
|
|
int n = ((rval & CCM_PLL5_CTRL_N_MASK) >> CCM_PLL5_CTRL_N_SHIFT);
|
|
int k = ((rval & CCM_PLL5_CTRL_K_MASK) >> CCM_PLL5_CTRL_K_SHIFT) + 1;
|
|
int p = ((rval & CCM_PLL5_CTRL_P_MASK) >> CCM_PLL5_CTRL_P_SHIFT);
|
|
return (24000000 * n * k) >> p;
|
|
}
|
|
|
|
unsigned int clock_get_pll6(void)
|
|
{
|
|
struct sunxi_ccm_reg *const ccm =
|
|
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
uint32_t rval = readl(&ccm->pll6_cfg);
|
|
int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT);
|
|
int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1;
|
|
return 24000000 * n * k / 2;
|
|
}
|
|
|
|
void clock_set_de_mod_clock(u32 *clk_cfg, unsigned int hz)
|
|
{
|
|
int pll = clock_get_pll5p();
|
|
int div = 1;
|
|
|
|
while ((pll / div) > hz)
|
|
div++;
|
|
|
|
writel(CCM_DE_CTRL_GATE | CCM_DE_CTRL_RST | CCM_DE_CTRL_PLL5P |
|
|
CCM_DE_CTRL_M(div), clk_cfg);
|
|
}
|