mt6315.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <delay.h>
#include <soc/mt6315.h>
#include <soc/pmif.h>
 
static struct pmif *pmif_arb = NULL;
 
static void mt6315_read(u32 slvid, u32 reg, u32 *data)
{
        pmif_arb->read(pmif_arb, slvid, reg, data);
}
 
static void mt6315_write(u32 slvid, u32 reg, u32 data)
{
        pmif_arb->write(pmif_arb, slvid, reg, data);
}
 
void mt6315_write_field(u32 slvid, u32 reg, u32 val, u32 mask, u32 shift)
{
        pmif_arb->write_field(pmif_arb, slvid, reg, val, mask, shift);
}
 
static void mt6315_wdt_enable(u32 slvid)
{
        mt6315_write(slvid, 0x3A9, 0x63);
        mt6315_write(slvid, 0x3A8, 0x15);
        mt6315_write(slvid, 0x127, 0x2);
        mt6315_write(slvid, 0x127, 0x1);
        mt6315_write(slvid, 0x127, 0x8);
        udelay(50);
        mt6315_write(slvid, 0x128, 0x8);
        mt6315_write(slvid, 0x3A8, 0);
        mt6315_write(slvid, 0x3A9, 0);
}
 
void mt6315_buck_set_voltage(u32 slvid, u32 buck_id, u32 buck_uv)
{
        unsigned int vol_reg, vol_val;
 
        if (!pmif_arb)
                die("ERROR: pmif_arb not initialized");
 
        switch (buck_id) {
        case MT6315_BUCK_1:
                vol_reg = MT6315_BUCK_TOP_ELR0;
                break;
        case MT6315_BUCK_3:
                vol_reg = MT6315_BUCK_TOP_ELR3;
                break;
        default:
                die("ERROR: Unknown buck_id %u", buck_id);
                return;
        };
 
        vol_val = buck_uv / 6250;
        mt6315_write(slvid, vol_reg, vol_val);
}
 
u32 mt6315_buck_get_voltage(u32 slvid, u32 buck_id)
{
        u32 vol_reg, vol;
 
        if (!pmif_arb)
                die("ERROR: pmif_arb not initialized");
 
        switch (buck_id) {
        case MT6315_BUCK_1:
                vol_reg = MT6315_BUCK_VBUCK1_DBG0;
                break;
        case MT6315_BUCK_3:
                vol_reg = MT6315_BUCK_VBUCK1_DBG3;
                break;
        default:
                die("ERROR: Unknown buck_id %u", buck_id);
                return 0;
        };
 
        mt6315_read(slvid, vol_reg, &vol);
        return vol * 6250;
}
 
static void init_pmif_arb(void)
{
        if (!pmif_arb) {
                pmif_arb = get_pmif_controller(PMIF_SPMI, 0);
                if (!pmif_arb)
                        die("ERROR: No spmi device");
        }
 
        if (pmif_arb->is_pmif_init_done(pmif_arb))
                die("ERROR - Failed to initialize pmif spmi");
}
 
void mt6315_init(void)
{
        init_pmif_arb();
        mt6315_wdt_enable(MT6315_CPU);
        mt6315_wdt_enable(MT6315_GPU);
        mt6315_init_setting();
}