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bdk: clock: simplify logic

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Simplify logic for clock enable and sdmmc clock management
This commit is contained in:
CTCaer
2025-08-27 14:44:41 +03:00
parent b4b3133570
commit ea3a60f516
2 changed files with 91 additions and 144 deletions
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231
bdk/soc/clock.c
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@@ -23,6 +23,14 @@
#include <soc/t210.h>
#include <storage/sdmmc.h>
typedef struct _clk_rst_mgd_t
{
u16 reset;
u16 enable;
u16 source;
u8 index;
} clk_rst_mgd_t;
typedef struct _clock_osc_t
{
u32 freq;
@@ -40,6 +48,15 @@ static const clock_osc_t _clock_osc_cnt[] = {
{ 48000, 2836, 3023 }
};
/* clk_rst_mgd_t: reset, enable, source, index */
static const clk_rst_mgd_t _clock_sdmmc[] = {
{ CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC1, CLK_L_SDMMC1 },
{ CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC2, CLK_L_SDMMC2 },
{ CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC3, CLK_U_SDMMC3 },
{ CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC4, CLK_L_SDMMC4 },
};
/* clk_rst_t: reset, enable, source, index, clk_src, clk_div */
static const clk_rst_t _clock_uart[] = {
@@ -52,43 +69,43 @@ static const clk_rst_t _clock_uart[] = {
//I2C default parameters - TLOW: 4, THIGH: 2, DEBOUNCE: 0, FM_DIV: 26.
static const clk_rst_t _clock_i2c[] = {
{ CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_I2C1, CLK_L_I2C1, 0, CLK_SRC_DIV(10.5) }, //20.4MHz -> 100KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_CONTROLLER_CLK_SOURCE_I2C2, CLK_H_I2C2, 0, CLK_SRC_DIV(3) }, //81.6MHz -> 400KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_I2C3, CLK_U_I2C3, 0, CLK_SRC_DIV(3) }, //81.6MHz -> 400KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_I2C4, CLK_V_I2C4, 0, CLK_SRC_DIV(10.5) }, //20.4MHz -> 100KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_CONTROLLER_CLK_SOURCE_I2C5, CLK_H_I2C5, 0, CLK_SRC_DIV(3) }, //81.6MHz -> 400KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_CLK_SOURCE_I2C6, CLK_X_I2C6, 0, CLK_SRC_DIV(10.5) } //20.4MHz -> 100KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_I2C1, CLK_L_I2C1, 0, CLK_SRC_DIV(10.5) }, // 20.4 MHz -> 100 KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_CONTROLLER_CLK_SOURCE_I2C2, CLK_H_I2C2, 0, CLK_SRC_DIV(3) }, // 81.6 MHz -> 400 KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_I2C3, CLK_U_I2C3, 0, CLK_SRC_DIV(3) }, // 81.6 MHz -> 400 KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_I2C4, CLK_V_I2C4, 0, CLK_SRC_DIV(10.5) }, // 20.4 MHz -> 100 KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_CONTROLLER_CLK_SOURCE_I2C5, CLK_H_I2C5, 0, CLK_SRC_DIV(3) }, // 81.6 MHz -> 400 KHz
{ CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_CLK_SOURCE_I2C6, CLK_X_I2C6, 0, CLK_SRC_DIV(10.5) } // 20.4 MHz -> 100 KHz
};
static clk_rst_t _clock_se = {
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_SE, CLK_V_SE, 0, CLK_SRC_DIV(1) // 408MHz. Default: 408MHz. Max: 627.2 MHz.
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_SE, CLK_V_SE, 0, CLK_SRC_DIV(1) // 408 MHz. Max: 627.2 MHz.
};
static clk_rst_t _clock_tzram = {
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_NO_SOURCE, CLK_V_TZRAM, 0, CLK_SRC_DIV(1)
};
static clk_rst_t _clock_host1x = {
CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_HOST1X, CLK_L_HOST1X, 4, CLK_SRC_DIV(2.5) // 163.2MHz. Max: 408MHz.
static clk_rst_t _clock_host1x = { // Has idle divisor.
CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_HOST1X, CLK_L_HOST1X, 4, CLK_SRC_DIV(2.5) // 163.2MHz. Max: 408 MHz.
};
static clk_rst_t _clock_tsec = {
CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_TSEC, CLK_U_TSEC, 0, CLK_SRC_DIV(2) // 204MHz. Max: 408MHz.
CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_TSEC, CLK_U_TSEC, 0, CLK_SRC_DIV(2) // 204 MHz. Max: 408 MHz.
};
static clk_rst_t _clock_nvdec = {
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_RST_CONTROLLER_CLK_SOURCE_NVDEC, CLK_Y_NVDEC, 4, CLK_SRC_DIV(1) // 408 MHz. Max: 716.8/979.2MHz.
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_RST_CONTROLLER_CLK_SOURCE_NVDEC, CLK_Y_NVDEC, 4, CLK_SRC_DIV(1) // 408 MHz. Max: 716.8/979.2 MHz.
};
static clk_rst_t _clock_nvjpg = {
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_RST_CONTROLLER_CLK_SOURCE_NVJPG, CLK_Y_NVJPG, 4, CLK_SRC_DIV(1) // 408 MHz. Max: 627.2/652.8MHz.
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_RST_CONTROLLER_CLK_SOURCE_NVJPG, CLK_Y_NVJPG, 4, CLK_SRC_DIV(1) // 408 MHz. Max: 627.2/652.8 MHz.
};
static clk_rst_t _clock_vic = {
CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_CLK_SOURCE_VIC, CLK_X_VIC, 2, CLK_SRC_DIV(1) // 408 MHz. Max: 627.2/652.8MHz.
static clk_rst_t _clock_vic = { // Has idle divisor.
CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_CLK_SOURCE_VIC, CLK_X_VIC, 2, CLK_SRC_DIV(1) // 408 MHz. Max: 627.2/652.8 MHz.
};
static clk_rst_t _clock_sor_safe = {
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_NO_SOURCE, CLK_Y_SOR_SAFE, 0, CLK_SRC_DIV(1)
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_NO_SOURCE, CLK_Y_SOR_SAFE, 0, CLK_SRC_DIV(1) // 24 MHz.
};
static clk_rst_t _clock_sor0 = {
CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_NOT_USED, CLK_X_SOR0, 0, CLK_SRC_DIV(1)
};
static clk_rst_t _clock_sor1 = {
CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_CLK_SOURCE_SOR1, CLK_X_SOR1, 0, CLK_SRC_DIV(2) // 204MHz.
CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_CLK_SOURCE_SOR1, CLK_X_SOR1, 0, CLK_SRC_DIV(2) // 204 MHz.
};
static clk_rst_t _clock_kfuse = {
CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_NO_SOURCE, CLK_H_KFUSE, 0, CLK_SRC_DIV(1)
@@ -97,7 +114,7 @@ static clk_rst_t _clock_cl_dvfs = {
CLK_RST_CONTROLLER_RST_DEVICES_W, CLK_RST_CONTROLLER_CLK_OUT_ENB_W, CLK_NO_SOURCE, CLK_W_DVFS, 0, CLK_SRC_DIV(1)
};
static clk_rst_t _clock_coresight = {
CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_CSITE, CLK_U_CSITE, 0, CLK_SRC_DIV(3) // 136MHz.
CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_CLK_SOURCE_CSITE, CLK_U_CSITE, 0, CLK_SRC_DIV(3) // 136 MHz.
};
static clk_rst_t _clock_pwm = {
CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_CLK_SOURCE_PWM, CLK_L_PWM, 6, CLK_SRC_DIV(3) // Fref: 6.4MHz. HOS: PLLP / 54 = 7.55MHz.
@@ -106,32 +123,32 @@ static clk_rst_t _clock_sdmmc_legacy_tm = {
CLK_RST_CONTROLLER_RST_DEVICES_Y, CLK_RST_CONTROLLER_CLK_OUT_ENB_Y, CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC_LEGACY_TM, CLK_Y_SDMMC_LEGACY_TM, 4, CLK_SRC_DIV(34) // 12MHz.
};
static clk_rst_t _clock_apbdma = {
CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_NO_SOURCE, CLK_H_APBDMA, 0, CLK_SRC_DIV(1) // Max: 204MHz.
CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_NO_SOURCE, CLK_H_APBDMA, 0, CLK_SRC_DIV(1) // Max: 204 MHz.
};
static clk_rst_t _clock_ahbdma = {
CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_NO_SOURCE, CLK_H_AHBDMA, 0, CLK_SRC_DIV(1)
};
static clk_rst_t _clock_actmon = {
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_ACTMON, CLK_V_ACTMON, 6, CLK_SRC_DIV(1) // 19.2MHz.
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_ACTMON, CLK_V_ACTMON, 6, CLK_SRC_DIV(1) // 19.2 MHz.
};
static clk_rst_t _clock_extperiph1 = {
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_EXTPERIPH1, CLK_V_EXTPERIPH1, 0, CLK_SRC_DIV(1)
};
static clk_rst_t _clock_extperiph2 = {
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_EXTPERIPH2, CLK_V_EXTPERIPH2, 2, CLK_SRC_DIV(102) // 4.0MHz
CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_CLK_SOURCE_EXTPERIPH2, CLK_V_EXTPERIPH2, 2, CLK_SRC_DIV(102) // 4.0 MHz
};
void clock_enable(const clk_rst_t *clk)
{
// Put clock into reset.
CLOCK(clk->reset) = (CLOCK(clk->reset) & ~BIT(clk->index)) | BIT(clk->index);
CLOCK(clk->reset) |= BIT(clk->index);
// Disable.
CLOCK(clk->enable) &= ~BIT(clk->index);
// Configure clock source if required.
if (clk->source)
CLOCK(clk->source) = clk->clk_div | (clk->clk_src << 29u);
CLOCK(clk->source) = (clk->clk_src << 29u) | clk->clk_div;
// Enable.
CLOCK(clk->enable) = (CLOCK(clk->enable) & ~BIT(clk->index)) | BIT(clk->index);
CLOCK(clk->enable) |= BIT(clk->index);
usleep(2);
// Take clock off reset.
@@ -141,7 +158,7 @@ void clock_enable(const clk_rst_t *clk)
void clock_disable(const clk_rst_t *clk)
{
// Put clock into reset.
CLOCK(clk->reset) = (CLOCK(clk->reset) & ~BIT(clk->index)) | BIT(clk->index);
CLOCK(clk->reset) |= BIT(clk->index);
// Disable.
CLOCK(clk->enable) &= ~BIT(clk->index);
}
@@ -215,6 +232,9 @@ void clock_enable_tzram()
void clock_enable_host1x()
{
clock_enable(&_clock_host1x);
// Set idle frequency to 81.6 MHz.
// CLOCK(_clock_host1x.clk_src) |= CLK_SRC_DIV(5) << 8;
}
void clock_disable_host1x()
@@ -259,6 +279,9 @@ void clock_enable_vic()
clock_enable(&_clock_vic);
// Set idle frequency to 136 MHz.
// CLOCK(_clock_vic.clk_src) |= CLK_SRC_DIV(3) << 8;
// Restore sys clock.
bpmp_clk_rate_relaxed(false);
}
@@ -601,115 +624,50 @@ void clock_enable_utmipll()
static int _clock_sdmmc_is_reset(u32 id)
{
switch (id)
{
case SDMMC_1:
return CLOCK(CLK_RST_CONTROLLER_RST_DEVICES_L) & BIT(CLK_L_SDMMC1);
case SDMMC_2:
return CLOCK(CLK_RST_CONTROLLER_RST_DEVICES_L) & BIT(CLK_L_SDMMC2);
case SDMMC_3:
return CLOCK(CLK_RST_CONTROLLER_RST_DEVICES_U) & BIT(CLK_U_SDMMC3);
case SDMMC_4:
return CLOCK(CLK_RST_CONTROLLER_RST_DEVICES_L) & BIT(CLK_L_SDMMC4);
}
return 0;
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
return CLOCK(clk->reset) & BIT(clk->index);
}
static void _clock_sdmmc_set_reset(u32 id)
{
switch (id)
{
case SDMMC_1:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_L_SET) = BIT(CLK_L_SDMMC1);
break;
case SDMMC_2:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_L_SET) = BIT(CLK_L_SDMMC2);
break;
case SDMMC_3:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_U_SET) = BIT(CLK_U_SDMMC3);
break;
case SDMMC_4:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_L_SET) = BIT(CLK_L_SDMMC4);
break;
}
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
CLOCK(clk->reset) |= BIT(clk->index);
}
static void _clock_sdmmc_clear_reset(u32 id)
{
switch (id)
{
case SDMMC_1:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_L_CLR) = BIT(CLK_L_SDMMC1);
break;
case SDMMC_2:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_L_CLR) = BIT(CLK_L_SDMMC2);
break;
case SDMMC_3:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_U_CLR) = BIT(CLK_U_SDMMC3);
break;
case SDMMC_4:
CLOCK(CLK_RST_CONTROLLER_RST_DEV_L_CLR) = BIT(CLK_L_SDMMC4);
break;
}
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
CLOCK(clk->reset) &= ~BIT(clk->index);
}
static int _clock_sdmmc_is_enabled(u32 id)
{
switch (id)
{
case SDMMC_1:
return CLOCK(CLK_RST_CONTROLLER_CLK_OUT_ENB_L) & BIT(CLK_L_SDMMC1);
case SDMMC_2:
return CLOCK(CLK_RST_CONTROLLER_CLK_OUT_ENB_L) & BIT(CLK_L_SDMMC2);
case SDMMC_3:
return CLOCK(CLK_RST_CONTROLLER_CLK_OUT_ENB_U) & BIT(CLK_U_SDMMC3);
case SDMMC_4:
return CLOCK(CLK_RST_CONTROLLER_CLK_OUT_ENB_L) & BIT(CLK_L_SDMMC4);
}
return 0;
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
return CLOCK(clk->enable) & BIT(clk->index);
}
static void _clock_sdmmc_set_enable(u32 id)
{
switch (id)
{
case SDMMC_1:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_SET) = BIT(CLK_L_SDMMC1);
break;
case SDMMC_2:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_SET) = BIT(CLK_L_SDMMC2);
break;
case SDMMC_3:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_U_SET) = BIT(CLK_U_SDMMC3);
break;
case SDMMC_4:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_SET) = BIT(CLK_L_SDMMC4);
break;
}
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
CLOCK(clk->enable) |= BIT(clk->index);
}
static void _clock_sdmmc_clear_enable(u32 id)
{
switch (id)
{
case SDMMC_1:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_CLR) = BIT(CLK_L_SDMMC1);
break;
case SDMMC_2:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_CLR) = BIT(CLK_L_SDMMC2);
break;
case SDMMC_3:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_U_CLR) = BIT(CLK_U_SDMMC3);
break;
case SDMMC_4:
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_CLR) = BIT(CLK_L_SDMMC4);
break;
}
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
CLOCK(clk->enable) &= ~BIT(clk->index);
}
static void _clock_sdmmc_config_legacy_tm()
{
const clk_rst_t *clk = &_clock_sdmmc_legacy_tm;
if (!(CLOCK(clk->enable) & BIT(clk->index)))
clock_enable(clk);
}
@@ -717,7 +675,7 @@ static void _clock_sdmmc_config_legacy_tm()
typedef struct _clock_sdmmc_t
{
u32 clock;
u32 real_clock;
u32 pclock;
} clock_sdmmc_t;
static clock_sdmmc_t _clock_sdmmc_table[4] = { 0 };
@@ -727,16 +685,16 @@ static clock_sdmmc_t _clock_sdmmc_table[4] = { 0 };
#define SDMMC_CLOCK_SRC_PLLC4_OUT0 0x7
#define SDMMC4_CLOCK_SRC_PLLC4_OUT2_LJ 0x1
static int _clock_sdmmc_config_clock_host(u32 *pclock, u32 id, u32 val)
static int _clock_sdmmc_config_clock_host(u32 *pclock, u32 id, u32 clock)
{
u32 divisor = 0;
u32 source = SDMMC_CLOCK_SRC_PLLP_OUT0;
u32 source = SDMMC_CLOCK_SRC_PLLP_OUT0;
if (id > SDMMC_4)
return 0;
// Get IO clock divisor.
switch (val)
switch (clock)
{
case 25000:
*pclock = 24728;
@@ -783,7 +741,7 @@ static int _clock_sdmmc_config_clock_host(u32 *pclock, u32 id, u32 val)
break;
case SDMMC_2:
case SDMMC_4:
source = SDMMC4_CLOCK_SRC_PLLC4_OUT2_LJ; // div is ignored.
source = SDMMC4_CLOCK_SRC_PLLC4_OUT2_LJ; // CLK RST divisor is ignored.
break;
}
*pclock = 199680;
@@ -799,8 +757,8 @@ static int _clock_sdmmc_config_clock_host(u32 *pclock, u32 id, u32 val)
#endif
}
_clock_sdmmc_table[id].clock = val;
_clock_sdmmc_table[id].real_clock = *pclock;
_clock_sdmmc_table[id].clock = clock;
_clock_sdmmc_table[id].pclock = *pclock;
// Enable PLLC4 if in use by any SDMMC.
if (source != SDMMC_CLOCK_SRC_PLLP_OUT0)
@@ -810,40 +768,30 @@ static int _clock_sdmmc_config_clock_host(u32 *pclock, u32 id, u32 val)
_clock_sdmmc_config_legacy_tm();
// Set SDMMC clock.
u32 src_div = (source << 29u) | divisor;
switch (id)
{
case SDMMC_1:
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC1) = src_div;
break;
case SDMMC_2:
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC2) = src_div;
break;
case SDMMC_3:
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC3) = src_div;
break;
case SDMMC_4:
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC4) = src_div;
break;
}
const clk_rst_mgd_t *clk = &_clock_sdmmc[id];
CLOCK(clk->source) = (source << 29u) | divisor;
return 1;
}
void clock_sdmmc_config_clock_source(u32 *pclock, u32 id, u32 val)
void clock_sdmmc_config_clock_source(u32 *pclock, u32 id, u32 clock)
{
if (_clock_sdmmc_table[id].clock == val)
if (_clock_sdmmc_table[id].clock == clock)
{
*pclock = _clock_sdmmc_table[id].real_clock;
*pclock = _clock_sdmmc_table[id].pclock;
}
else
{
int is_enabled = _clock_sdmmc_is_enabled(id);
if (is_enabled)
_clock_sdmmc_clear_enable(id);
_clock_sdmmc_config_clock_host(pclock, id, val);
_clock_sdmmc_config_clock_host(pclock, id, clock);
if (is_enabled)
_clock_sdmmc_set_enable(id);
// Commit changes.
_clock_sdmmc_is_reset(id);
}
}
@@ -926,18 +874,17 @@ int clock_sdmmc_is_not_reset_and_enabled(u32 id)
return !_clock_sdmmc_is_reset(id) && _clock_sdmmc_is_enabled(id);
}
void clock_sdmmc_enable(u32 id, u32 val)
void clock_sdmmc_enable(u32 id, u32 clock)
{
u32 clock = 0;
if (_clock_sdmmc_is_enabled(id))
_clock_sdmmc_clear_enable(id);
_clock_sdmmc_clear_enable(id);
_clock_sdmmc_set_reset(id);
_clock_sdmmc_config_clock_host(&clock, id, val);
_clock_sdmmc_config_clock_host(&clock, id, clock);
_clock_sdmmc_set_enable(id);
// // Commit changes and wait 100 cycles for reset and for clocks to stabilize.
_clock_sdmmc_is_reset(id);
// Wait 100 cycles for reset and for clocks to stabilize.
usleep((100 * 1000 + clock - 1) / clock);
_clock_sdmmc_clear_reset(id);
_clock_sdmmc_is_reset(id);
}

4
bdk/soc/clock.h
View File

@@ -738,10 +738,10 @@ void clock_enable_pllu();
void clock_disable_pllu();
void clock_enable_utmipll();
void clock_sdmmc_config_clock_source(u32 *pclock, u32 id, u32 val);
void clock_sdmmc_config_clock_source(u32 *pclock, u32 id, u32 clock);
void clock_sdmmc_get_card_clock_div(u32 *pclock, u16 *pdivisor, u32 type);
int clock_sdmmc_is_not_reset_and_enabled(u32 id);
void clock_sdmmc_enable(u32 id, u32 val);
void clock_sdmmc_enable(u32 id, u32 clock);
void clock_sdmmc_disable(u32 id);
u32 clock_get_osc_freq();