blob: c7dd6c3f9280d19953afa00db05ba91d7ea3bf3b [file] [log] [blame]
/*
* arch/arm/cpu/armv8/txl/clock.c
*
* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <common.h>
#include <asm/arch/io.h>
#include <asm/arch/secure_apb.h>
#include <asm/arch/clock.h>
/* !!must use nonzero value as default value. Otherwise it linked to bss segment,
but this segment not cleared to zero while running "board_init_f" */
#define CLK_UNKNOWN (0xffffffff)
#if 0
__u32 get_rate_xtal(void)
{
unsigned long clk;
clk = (readl(P_PREG_CTLREG0_ADDR) >> 4) & 0x3f;
clk = clk * 1000 * 1000;
return clk;
}
__u32 get_cpu_clk(void)
{
static __u32 sys_freq=CLK_UNKNOWN;
if (sys_freq == CLK_UNKNOWN)
{
sys_freq=(clk_util_clk_msr(SYS_PLL_CLK)*1000000);
}
return sys_freq;
}
__u32 get_clk_ddr(void)
{
static __u32 freq=CLK_UNKNOWN;
if (freq == CLK_UNKNOWN)
{
freq=(clk_util_clk_msr(DDR_PLL_CLK)*1000000);
}
return freq;
}
__u32 get_clk_ethernet_pad(void)
{
static __u32 freq=CLK_UNKNOWN;
if (freq == CLK_UNKNOWN)
{
freq=(clk_util_clk_msr(MOD_ETH_CLK50_I)*1000000);
}
return freq;
}
__u32 get_clk_cts_eth_rmii(void)
{
static __u32 freq=CLK_UNKNOWN;
if (freq == CLK_UNKNOWN)
{
freq=(clk_util_clk_msr(CTS_ETH_RMII)*1000000);
}
return freq;
}
__u32 get_misc_pll_clk(void)
{
static __u32 freq=CLK_UNKNOWN;
if (freq == CLK_UNKNOWN)
{
freq=(clk_util_clk_msr(MISC_PLL_CLK)*1000000);
}
return freq;
}
#endif
__u32 get_clk81(void)
{
static __u32 clk81_freq=CLK_UNKNOWN;
if (clk81_freq == CLK_UNKNOWN)
{
clk81_freq=(clk_util_clk_msr(CLK81)*1000000);
}
return clk81_freq;
}
struct __clk_rate{
unsigned clksrc;
__u32 (*get_rate)(void);
};
struct __clk_rate clkrate[]={
{
.clksrc=CLK81,
.get_rate=get_clk81,
},
};
int clk_get_rate(unsigned clksrc)
{
int i;
for (i = 0; i < sizeof(clkrate)/sizeof(clkrate[0]); i++)
{
if (clksrc == clkrate[i].clksrc)
return clkrate[i].get_rate();
}
return -1;
}
const char* clk_table[] = {
[109] = "cts_alocker_in_clk ",
[108] = "cts_alocker_out_clk ",
[107] = "am_ring_osc_clk_out_ee[11] ",
[106] = "am_ring_osc_clk_out_ee[10] ",
[105] = "am_ring_osc_clk_out_ee[9] ",
[104] = "am_ring_osc_clk_out_ee[8] ",
[103] = "am_ring_osc_clk_out_ee[7] ",
[102] = "am_ring_osc_clk_out_ee[6] ",
[101] = "am_ring_osc_clk_out_ee[5] ",
[100] = "am_ring_osc_clk_out_ee[4] ",
[99] = "am_ring_osc_clk_out_ee[3] ",
[98] = "cts_hdmirx_aud_pll_clk ",
[97] = "cts_vpu_clkb_tmp ",
[96] = "cts_vpu_clkb ",
[95] = "ethphy_test_clk_out ",
[94] = "atv_dmd_mono_clk_32 ",
[93] = "cts_audin_lrclk ",
[92] = "cts_audin_sclk ",
[91] = "cts_audin_mclk ",
[90] = "cts_hdmitx_sys_clk ",
[89] = "HDMI_CLK_TODIG ",
[88] = "hdmirx_vid_clk ",
[87] = "lvds_fifo_clk ",
[86] = "hdmirx_phy_dtb[3] ",
[85] = "hdmirx_phy_dtb[2] ",
[84] = "hdmirx_phy_dtb[1] ",
[83] = "hdmirx_phy_dtb[0] ",
[82] = "Cts_ge2d_clk ",
[81] = "Cts_vapbclk ",
[80] = "Rng_ring_osc_clk[3] ",
[79] = "Rng_ring_osc_clk[2] ",
[78] = "Rng_ring_osc_clk[1] ",
[77] = "Rng_ring_osc_clk[0] ",
[76] = "cts_aoclk_int ",
[75] = "cts_aoclkx2_int ",
[74] = "cts_atv_dmd_vdac_clk ",
[73] = "cts_pwm_C_clk ",
[72] = "cts_pwm_D_clk ",
[71] = "cts_pwm_E_clk ",
[70] = "cts_pwm_F_clk ",
[69] = "Cts_hdcp22_skp ",
[68] = "Cts_hdcp22_esm ",
[67] = "tvfe_sample_clk ",
[66] = "cts_vid_lock_clk ",
[65] = "cts_atv_dmd_sys_clk ",
[64] = "Cts_hdmirx_cfg_clk ",
[63] = "adc_dpll_intclk ",
[62] = "cts_hevc_clk ",
[61] = "gpio_clk_msr ",
[60] = "alt_32k_clk ",
[59] = "cts_hcodec_clk ",
[58] = "Hdmirx_aud_clk ",
[57] = "Cts_hdmirx_audmeas ",
[56] = "Cts_hdmirx_modet_clk ",
[55] = "vid_pll_div_clk_out ",
[54] = "Cts_hdmirx_arc_ref_clk ",
[53] = "sd_emmc_clk_A ",
[52] = "sd_emmc_clk_B ",
[51] = "sd_emmc_clk_C ",
[50] = "mp3_clk_out ",
[49] = "mp2_clk_out ",
[48] = "mp1_clk_out ",
[47] = "ddr_dpll_pt_clk ",
[46] = "cts_vpu_clk ",
[45] = "cts_pwm_A_clk ",
[44] = "cts_pwm_B_clk ",
[43] = "fclk_div5 ",
[42] = "mp0_clk_out ",
[41] = "eth_rx_clk_rmii ",
[40] = "cts_pcm_mclk ",
[39] = "cts_pcm_sclk ",
[38] = "Cts_vdin_meas_clk ",
[37] = "cts_clk_i958 ",
[36] = "cts_hdmi_tx_pixel_clk ",
[35] = "cts_mali_clk ",
[34] = "adc_dpll_clk_b3 ",
[33] = "adc_dpll_clk_b2 ",
[32] = "cts_vdec_clk ",
[31] = "MPLL_CLK_TEST_OUT ",
[30] = "Hdmirx_audmeas_clk ",
[29] = "Hdmirx_pix_clk ",
[28] = "Cts_sar_adc_clk ",
[27] = "Hdmirx_mpll_div_clk ",
[26] = "sc_clk_int ",
[25] = "Hdmirx_tmds_clk ",
[24] = "Hdmirx_aud_pll_clk ",
[23] = "mmc_clk ",
[22] = "eth_phy_ref_clk ",
[21] = "i2s_clk_in_src0 ",
[20] = "rtc_osc_clk_out ",
[19] = "adc_dpll_clka2 ",
[18] = "sys_cpu_clk_div16 ",
[17] = "sys_pll_div16 ",
[16] = "cts_FEC_CLK_2 ",
[15] = "cts_FEC_CLK_1 ",
[14] = "cts_FEC_CLK_0 ",
[13] = "cts_amclk ",
[12] = "Cts_demod_core_clk ",
[11] = "mac_eth_tx_clk ",
[10] = "cts_vdac_clk ",
[9] = "cts_encl_clk ",
[8] = "cts_encp_clk ",
[7] = "clk81 ",
[6] = "cts_enci_clk ",
[5] = "gp1_pll_clk ",
[4] = "gp0_pll_clk ",
[3] = "A53_ring_osc_clk ",
[2] = "am_ring_osc_clk_out_ee[2] ",
[1] = "am_ring_osc_clk_out_ee[1] ",
[0] = "am_ring_osc_clk_out_ee[0] ",
};
unsigned long clk_util_clk_msr(unsigned long clk_mux)
{
unsigned int regval = 0;
WRITE_CBUS_REG(MSR_CLK_REG0, 0);
/* Set the measurement gate to 64uS */
CLEAR_CBUS_REG_MASK(MSR_CLK_REG0, 0xffff);
/* 64uS is enough for measure the frequence? */
SET_CBUS_REG_MASK(MSR_CLK_REG0, (64 - 1));
/* Disable continuous measurement */
/* Disable interrupts */
CLEAR_CBUS_REG_MASK(MSR_CLK_REG0, ((1 << 18) | (1 << 17)));
CLEAR_CBUS_REG_MASK(MSR_CLK_REG0, (0x7f << 20));
SET_CBUS_REG_MASK(MSR_CLK_REG0, (clk_mux << 20) | /* Select MUX */
(1 << 19) | /* enable the clock */
(1 << 16)); /* enable measuring */
/* Wait for the measurement to be done */
regval = READ_CBUS_REG(MSR_CLK_REG0);
do {
regval = READ_CBUS_REG(MSR_CLK_REG0);
} while (regval & (1 << 31));
/* Disable measuring */
CLEAR_CBUS_REG_MASK(MSR_CLK_REG0, (1 << 16));
regval = (READ_CBUS_REG(MSR_CLK_REG2) + 31) & 0x000FFFFF;
return (regval >> 6);
}
int clk_msr(int index)
{
unsigned int index_total = sizeof(clk_table) / sizeof(char *);
int i;
if (index == 0xff) {
for (i = 0; i < index_total; i++)
printf("[%4d][%4ld MHz] %s\n", i, clk_util_clk_msr(i), clk_table[i]);
}
else {
if (index >= index_total) {
printf("clk msr legal range: [0-%d]\n", index_total-1);
return -1;
}
printf("[%4d][%4ld MHz] %s\n", index, clk_util_clk_msr(index), clk_table[index]);
}
return 0;
}
#ifdef CONFIG_AML_SPICC
/* generic clock control for spicc0.
* if deleted, you have to add it into all txlx board files as necessary.
*/
int spicc0_clk_enable(bool enable)
{
u32 regv;
regv = readl(P_HHI_GCLK_MPEG0);
if (enable)
regv |= 1 << 8;
else
regv &= ~(1 << 8);
writel(regv, P_HHI_GCLK_MPEG0);
return 0;
}
#endif /* CONFIG_AML_SPICC */