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/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
#include <commonlib/helpers.h>
#include <delay.h>
#include <device/mmio.h>
#include <soc/infracfg.h>
#include <soc/pll.h>
#include <soc/pll_common.h>
#include <soc/pmif.h>
#include <soc/pmif_clk_common.h>
#include <soc/pmif_sw.h>
#include <soc/pmif_spmi.h>
#include <soc/spm.h>
/* APMIXED, ULPOSC_CTRL_SEL */
DEFINE_BITFIELD(OSC1_SEL, 3, 0)
/* APMIXED, ULPOSC1_CON0 */
DEFINE_BITFIELD(OSC1_CALI, 6, 0)
DEFINE_BITFIELD(OSC1_IBAND, 13, 7)
DEFINE_BITFIELD(OSC1_FBAND, 17, 14)
DEFINE_BITFIELD(OSC1_DIV, 23, 18)
DEFINE_BIT(OSC1_CP_EN, 24)
/* APMIXED, ULPOSC1_CON1 */
DEFINE_BITFIELD(OSC1_32KCALI, 7, 0)
DEFINE_BITFIELD(OSC1_RSV1, 15, 8)
DEFINE_BITFIELD(OSC1_RSV2, 23, 16)
DEFINE_BITFIELD(OSC1_MOD, 25, 24)
DEFINE_BIT(OSC1_DIV2_EN, 26)
/* APMIXED, ULPOSC1_CON2 */
DEFINE_BITFIELD(OSC1_BIAS, 7, 0)
/* SPM, POWERON_CONFIG_EN */
DEFINE_BIT(BCLK_CG_EN, 0)
DEFINE_BITFIELD(PROJECT_CODE, 31, 16)
/* SPM, ULPOSC_CON */
DEFINE_BIT(ULPOSC_EN, 0)
DEFINE_BIT(ULPOSC_CG_EN, 2)
/* INFRA, MODULE_SW_CG */
DEFINE_BIT(PMIC_CG_TMR, 0)
DEFINE_BIT(PMIC_CG_AP, 1)
DEFINE_BIT(PMIC_CG_MD, 2)
DEFINE_BIT(PMIC_CG_CONN, 3)
/* INFRA, INFRA_GLOBALCON_RST2 */
DEFINE_BIT(PMIC_WRAP_SWRST, 0)
DEFINE_BIT(PMICSPMI_SWRST, 14)
/* INFRA, PMICW_CLOCK_CTRL */
DEFINE_BITFIELD(PMIC_SYSCK_26M_SEL, 3, 0)
/* TOPCKGEN, CLK_CFG_9 */
DEFINE_BITFIELD(CLK_PWRAP_ULPOSC_SET, 2, 0)
DEFINE_BIT(PDN_PWRAP_ULPOSC, 0)
/* TOPCKGEN, CLK_CFG_UPDATE1 */
DEFINE_BIT(CLK_CFG_UPDATE1, 4)
/* EFUSE, CLK_MONITOR_CTRL */
DEFINE_BIT(CLK_MONITOR_CTRL, 0)
static void pmif_ulposc_config(void)
{
/* ULPOSC_CTRL_SEL */
SET32_BITFIELDS(&mtk_apmixed->ulposc_ctrl_sel, OSC1_SEL, 0x0F);
/* ULPOSC1_CON0 */
SET32_BITFIELDS(&mtk_apmixed->ulposc1_con0, OSC1_CP_EN, 0, OSC1_DIV, 0x0F,
OSC1_FBAND, 0x2, OSC1_IBAND, 0x4A, OSC1_CALI, 0x7D);
/* ULPOSC1_CON1 */
SET32_BITFIELDS(&mtk_apmixed->ulposc1_con1, OSC1_DIV2_EN, 0, OSC1_MOD, 0,
OSC1_RSV2, 0, OSC1_RSV1, 0x29, OSC1_32KCALI, 0);
/* ULPOSC1_CON2 */
SET32_BITFIELDS(&mtk_apmixed->ulposc1_con2, OSC1_BIAS, 0x41);
udelay(15);
}
u32 pmif_get_ulposc_freq_mhz(u32 cali_val)
{
u32 result = 0;
/* set calibration value */
SET32_BITFIELDS(&mtk_apmixed->ulposc1_con0, OSC1_CALI, cali_val);
udelay(50);
result = mt_fmeter_get_freq_khz(FMETER_ABIST, FREQ_METER_ABIST_AD_OSC_CK);
return result / 1000;
}
static void pmif_clockmonitor_config(bool enable)
{
SET32_BITFIELDS(&mtk_clk_monitor->clk_monitor_ctrl,
CLK_MONITOR_CTRL, !enable);
}
static int pmif_init_ulposc(void)
{
/* calibrate ULPOSC1 */
pmif_ulposc_config();
/* enable APB clock swinf */
if (!READ32_BITFIELD(&mtk_spm->poweron_config_set, BCLK_CG_EN))
SET32_BITFIELDS(&mtk_spm->poweron_config_set, BCLK_CG_EN, 1,
PROJECT_CODE, 0xb16);
/* turn on ulposc */
SET32_BITFIELDS(&mtk_spm->ulposc_con, ULPOSC_EN, 1);
udelay(50);
SET32_BITFIELDS(&mtk_spm->ulposc_con, ULPOSC_CG_EN, 1);
udelay(50);
return pmif_ulposc_cali(FREQ_260MHZ);
}
int pmif_clk_init(void)
{
u32 ulposc1;
/* check hardware default value first */
ulposc1 = pmif_get_ulposc_freq_mhz(CALI_DEFAULT_CAP_VALUE);
if (pmif_ulposc_check(ulposc1, FREQ_260MHZ)) {
/*
* If the hardware value is not what we want, we need to adjust
* it by the software setting.
*/
pmif_clockmonitor_config(false);
if (pmif_init_ulposc())
return E_NODEV;
pmif_clockmonitor_config(true);
}
/* turn off pmic_cg_tmr, cg_ap, cg_md, cg_conn clock */
SET32_BITFIELDS(&mt8188_infracfg_ao->module_sw_cg_0_set, PMIC_CG_TMR, 1, PMIC_CG_AP, 1,
PMIC_CG_MD, 1, PMIC_CG_CONN, 1);
SET32_BITFIELDS(&mtk_topckgen->clk_cfg_9, PDN_PWRAP_ULPOSC, 0,
CLK_PWRAP_ULPOSC_SET, 0);
SET32_BITFIELDS(&mtk_topckgen->clk_cfg_update1, CLK_CFG_UPDATE1, 1);
/* use ULPOSC1 clock */
SET32_BITFIELDS(&mt8188_infracfg_ao->pmicw_clock_ctrl_clr, PMIC_SYSCK_26M_SEL, 0xf);
/* toggle SPI/SPMI sw reset */
SET32_BITFIELDS(&mt8188_infracfg_ao->infra_globalcon_rst2_set, PMICSPMI_SWRST, 1,
PMIC_WRAP_SWRST, 1);
SET32_BITFIELDS(&mt8188_infracfg_ao->infra_globalcon_rst2_clr, PMICSPMI_SWRST, 1,
PMIC_WRAP_SWRST, 1);
/* turn on pmic_cg_tmr, cg_ap, cg_md, cg_conn clock */
SET32_BITFIELDS(&mt8188_infracfg_ao->module_sw_cg_0_clr, PMIC_CG_TMR, 1, PMIC_CG_AP, 1,
PMIC_CG_MD, 1, PMIC_CG_CONN, 1);
return 0;
}
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