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Commit 88c9b70b authored by Gabriel Fernandez's avatar Gabriel Fernandez Committed by Stephen Boyd
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clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards 

This patch enables clocks for STM32F746 boards.
Signed-off-by: default avatarGabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent 0875dd59
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Showing with 271 additions and 6 deletions
drivers/clk/clk-stm32f4.c
View file @ 88c9b70b
...@@ -48,6 +48,7 @@ ...@@ -48,6 +48,7 @@
#define STM32F4_RCC_PLLI2SCFGR 0x84 #define STM32F4_RCC_PLLI2SCFGR 0x84
#define STM32F4_RCC_PLLSAICFGR 0x88 #define STM32F4_RCC_PLLSAICFGR 0x88
#define STM32F4_RCC_DCKCFGR 0x8c #define STM32F4_RCC_DCKCFGR 0x8c
#define STM32F7_RCC_DCKCFGR2 0x90
#define NONE -1 #define NONE -1
#define NO_IDX NONE #define NO_IDX NONE
...@@ -224,6 +225,80 @@ static const struct stm32f4_gate_data stm32f469_gates[] __initconst = { ...@@ -224,6 +225,80 @@ static const struct stm32f4_gate_data stm32f469_gates[] __initconst = {
{ STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" }, { STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" },
}; };
static const struct stm32f4_gate_data stm32f746_gates[] __initconst = {
{ STM32F4_RCC_AHB1ENR, 0, "gpioa", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 1, "gpiob", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 2, "gpioc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 3, "gpiod", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 4, "gpioe", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 5, "gpiof", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 6, "gpiog", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 7, "gpioh", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 8, "gpioi", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 9, "gpioj", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 10, "gpiok", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 12, "crc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 18, "bkpsra", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 20, "dtcmram", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 21, "dma1", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 22, "dma2", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 23, "dma2d", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 25, "ethmac", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 26, "ethmactx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 27, "ethmacrx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 28, "ethmacptp", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 29, "otghs", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 30, "otghsulpi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 0, "dcmi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 4, "cryp", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 5, "hash", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 6, "rng", "pll48" },
{ STM32F4_RCC_AHB2ENR, 7, "otgfs", "pll48" },
{ STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_AHB3ENR, 1, "qspi", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_APB1ENR, 0, "tim2", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 1, "tim3", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 2, "tim4", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 3, "tim5", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 4, "tim6", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 5, "tim7", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 6, "tim12", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 7, "tim13", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 8, "tim14", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 11, "wwdg", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 14, "spi2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 15, "spi3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 16, "spdifrx", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 25, "can1", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 26, "can2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 27, "cec", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 28, "pwr", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 29, "dac", "apb1_div" },
{ STM32F4_RCC_APB2ENR, 0, "tim1", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 1, "tim8", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 8, "adc1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 9, "adc2", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 10, "adc3", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 11, "sdmmc", "sdmux" },
{ STM32F4_RCC_APB2ENR, 12, "spi1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 13, "spi4", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 14, "syscfg", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 16, "tim9", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 17, "tim10", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 18, "tim11", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 20, "spi5", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 21, "spi6", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 22, "sai1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 23, "sai2", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" },
};
/* /*
* This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx * This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx
* have gate bits associated with them. Its combined hweight is 71. * have gate bits associated with them. Its combined hweight is 71.
...@@ -238,6 +313,10 @@ static const u64 stm32f46xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull, ...@@ -238,6 +313,10 @@ static const u64 stm32f46xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
0x0000000000000003ull, 0x0000000000000003ull,
0x0c777f33f6fec9ffull }; 0x0c777f33f6fec9ffull };
static const u64 stm32f746_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
0x0000000000000003ull,
0x04f77f033e01c9ffull };
static const u64 *stm32f4_gate_map; static const u64 *stm32f4_gate_map;
static struct clk_hw **clks; static struct clk_hw **clks;
...@@ -247,6 +326,8 @@ static void __iomem *base; ...@@ -247,6 +326,8 @@ static void __iomem *base;
static struct regmap *pdrm; static struct regmap *pdrm;
static int stm32fx_end_primary_clk;
/* /*
* "Multiplier" device for APBx clocks. * "Multiplier" device for APBx clocks.
* *
...@@ -685,7 +766,7 @@ static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary) ...@@ -685,7 +766,7 @@ static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary)
u64 table[MAX_GATE_MAP]; u64 table[MAX_GATE_MAP];
if (primary == 1) { if (primary == 1) {
if (WARN_ON(secondary >= END_PRIMARY_CLK)) if (WARN_ON(secondary >= stm32fx_end_primary_clk))
return -EINVAL; return -EINVAL;
return secondary; return secondary;
} }
...@@ -702,7 +783,7 @@ static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary) ...@@ -702,7 +783,7 @@ static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary)
table[BIT_ULL_WORD(secondary)] &= table[BIT_ULL_WORD(secondary)] &=
GENMASK_ULL(secondary % BITS_PER_LONG_LONG, 0); GENMASK_ULL(secondary % BITS_PER_LONG_LONG, 0);
return END_PRIMARY_CLK - 1 + hweight64(table[0]) + return stm32fx_end_primary_clk - 1 + hweight64(table[0]) +
(BIT_ULL_WORD(secondary) >= 1 ? hweight64(table[1]) : 0) + (BIT_ULL_WORD(secondary) >= 1 ? hweight64(table[1]) : 0) +
(BIT_ULL_WORD(secondary) >= 2 ? hweight64(table[2]) : 0); (BIT_ULL_WORD(secondary) >= 2 ? hweight64(table[2]) : 0);
} }
...@@ -955,6 +1036,17 @@ static const char *pll48_parents[2] = { "pll-q", "pllsai-p" }; ...@@ -955,6 +1036,17 @@ static const char *pll48_parents[2] = { "pll-q", "pllsai-p" };
static const char *sdmux_parents[2] = { "pll48", "sys" }; static const char *sdmux_parents[2] = { "pll48", "sys" };
static const char *hdmi_parents[2] = { "lse", "hsi_div488" };
static const char *spdif_parent[1] = { "plli2s-p" };
static const char *lptim_parent[4] = { "apb1_mul", "lsi", "hsi", "lse" };
static const char *uart_parents1[4] = { "apb2_div", "sys", "hsi", "lse" };
static const char *uart_parents2[4] = { "apb1_div", "sys", "hsi", "lse" };
static const char *i2c_parents[4] = { "apb1_div", "sys", "hsi", "no-clock" };
struct stm32_aux_clk { struct stm32_aux_clk {
int idx; int idx;
const char *name; const char *name;
...@@ -975,6 +1067,7 @@ struct stm32f4_clk_data { ...@@ -975,6 +1067,7 @@ struct stm32f4_clk_data {
const struct stm32f4_pll_data *pll_data; const struct stm32f4_pll_data *pll_data;
const struct stm32_aux_clk *aux_clk; const struct stm32_aux_clk *aux_clk;
int aux_clk_num; int aux_clk_num;
int end_primary;
}; };
static const struct stm32_aux_clk stm32f429_aux_clk[] = { static const struct stm32_aux_clk stm32f429_aux_clk[] = {
...@@ -1043,7 +1136,154 @@ static const struct stm32_aux_clk stm32f469_aux_clk[] = { ...@@ -1043,7 +1136,154 @@ static const struct stm32_aux_clk stm32f469_aux_clk[] = {
}, },
}; };
static const struct stm32_aux_clk stm32f746_aux_clk[] = {
{
CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
NO_MUX, 0, 0,
STM32F4_RCC_APB2ENR, 26,
CLK_SET_RATE_PARENT
},
{
CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
STM32F4_RCC_CFGR, 23, 1,
NO_GATE, 0,
CLK_SET_RATE_PARENT
},
{
CLK_SAI1, "sai1_clk", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 20, 3,
STM32F4_RCC_APB2ENR, 22,
CLK_SET_RATE_PARENT
},
{
CLK_SAI2, "sai2_clk", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 22, 3,
STM32F4_RCC_APB2ENR, 23,
CLK_SET_RATE_PARENT
},
{
NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),
STM32F7_RCC_DCKCFGR2, 27, 1,
NO_GATE, 0,
0
},
{
NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents),
STM32F7_RCC_DCKCFGR2, 28, 1,
NO_GATE, 0,
0
},
{
CLK_HDMI_CEC, "hdmi-cec",
hdmi_parents, ARRAY_SIZE(hdmi_parents),
STM32F7_RCC_DCKCFGR2, 26, 1,
NO_GATE, 0,
0
},
{
CLK_SPDIF, "spdif-rx",
spdif_parent, ARRAY_SIZE(spdif_parent),
STM32F7_RCC_DCKCFGR2, 22, 3,
STM32F4_RCC_APB2ENR, 23,
CLK_SET_RATE_PARENT
},
{
CLK_USART1, "usart1",
uart_parents1, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 0, 3,
STM32F4_RCC_APB2ENR, 4,
CLK_SET_RATE_PARENT,
},
{
CLK_USART2, "usart2",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 2, 3,
STM32F4_RCC_APB1ENR, 17,
CLK_SET_RATE_PARENT,
},
{
CLK_USART3, "usart3",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 4, 3,
STM32F4_RCC_APB1ENR, 18,
CLK_SET_RATE_PARENT,
},
{
CLK_UART4, "uart4",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 6, 3,
STM32F4_RCC_APB1ENR, 19,
CLK_SET_RATE_PARENT,
},
{
CLK_UART5, "uart5",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 8, 3,
STM32F4_RCC_APB1ENR, 20,
CLK_SET_RATE_PARENT,
},
{
CLK_USART6, "usart6",
uart_parents1, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 10, 3,
STM32F4_RCC_APB2ENR, 5,
CLK_SET_RATE_PARENT,
},
{
CLK_UART7, "uart7",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 12, 3,
STM32F4_RCC_APB1ENR, 30,
CLK_SET_RATE_PARENT,
},
{
CLK_UART8, "uart8",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 14, 3,
STM32F4_RCC_APB1ENR, 31,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C1, "i2c1",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 16, 3,
STM32F4_RCC_APB1ENR, 21,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C2, "i2c2",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 18, 3,
STM32F4_RCC_APB1ENR, 22,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C3, "i2c3",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 20, 3,
STM32F4_RCC_APB1ENR, 23,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C4, "i2c4",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 22, 3,
STM32F4_RCC_APB1ENR, 24,
CLK_SET_RATE_PARENT,
},
{
CLK_LPTIMER, "lptim1",
lptim_parent, ARRAY_SIZE(lptim_parent),
STM32F7_RCC_DCKCFGR2, 24, 3,
STM32F4_RCC_APB1ENR, 9,
CLK_SET_RATE_PARENT
},
};
static const struct stm32f4_clk_data stm32f429_clk_data = { static const struct stm32f4_clk_data stm32f429_clk_data = {
.end_primary = END_PRIMARY_CLK,
.gates_data = stm32f429_gates, .gates_data = stm32f429_gates,
.gates_map = stm32f42xx_gate_map, .gates_map = stm32f42xx_gate_map,
.gates_num = ARRAY_SIZE(stm32f429_gates), .gates_num = ARRAY_SIZE(stm32f429_gates),
...@@ -1053,6 +1293,7 @@ static const struct stm32f4_clk_data stm32f429_clk_data = { ...@@ -1053,6 +1293,7 @@ static const struct stm32f4_clk_data stm32f429_clk_data = {
}; };
static const struct stm32f4_clk_data stm32f469_clk_data = { static const struct stm32f4_clk_data stm32f469_clk_data = {
.end_primary = END_PRIMARY_CLK,
.gates_data = stm32f469_gates, .gates_data = stm32f469_gates,
.gates_map = stm32f46xx_gate_map, .gates_map = stm32f46xx_gate_map,
.gates_num = ARRAY_SIZE(stm32f469_gates), .gates_num = ARRAY_SIZE(stm32f469_gates),
...@@ -1061,6 +1302,16 @@ static const struct stm32f4_clk_data stm32f469_clk_data = { ...@@ -1061,6 +1302,16 @@ static const struct stm32f4_clk_data stm32f469_clk_data = {
.aux_clk_num = ARRAY_SIZE(stm32f469_aux_clk), .aux_clk_num = ARRAY_SIZE(stm32f469_aux_clk),
}; };
static const struct stm32f4_clk_data stm32f746_clk_data = {
.end_primary = END_PRIMARY_CLK_F7,
.gates_data = stm32f746_gates,
.gates_map = stm32f746_gate_map,
.gates_num = ARRAY_SIZE(stm32f746_gates),
.pll_data = stm32f469_pll,
.aux_clk = stm32f746_aux_clk,
.aux_clk_num = ARRAY_SIZE(stm32f746_aux_clk),
};
static const struct of_device_id stm32f4_of_match[] = { static const struct of_device_id stm32f4_of_match[] = {
{ {
.compatible = "st,stm32f42xx-rcc", .compatible = "st,stm32f42xx-rcc",
...@@ -1070,6 +1321,10 @@ static const struct of_device_id stm32f4_of_match[] = { ...@@ -1070,6 +1321,10 @@ static const struct of_device_id stm32f4_of_match[] = {
.compatible = "st,stm32f469-rcc", .compatible = "st,stm32f469-rcc",
.data = &stm32f469_clk_data .data = &stm32f469_clk_data
}, },
{
.compatible = "st,stm32f746-rcc",
.data = &stm32f746_clk_data
},
{} {}
}; };
...@@ -1163,7 +1418,9 @@ static void __init stm32f4_rcc_init(struct device_node *np) ...@@ -1163,7 +1418,9 @@ static void __init stm32f4_rcc_init(struct device_node *np)
data = match->data; data = match->data;
clks = kmalloc_array(data->gates_num + END_PRIMARY_CLK, stm32fx_end_primary_clk = data->end_primary;
clks = kmalloc_array(data->gates_num + stm32fx_end_primary_clk,
sizeof(*clks), GFP_KERNEL); sizeof(*clks), GFP_KERNEL);
if (!clks) if (!clks)
goto fail; goto fail;
...@@ -1177,8 +1434,9 @@ static void __init stm32f4_rcc_init(struct device_node *np) ...@@ -1177,8 +1434,9 @@ static void __init stm32f4_rcc_init(struct device_node *np)
i2s_parents[1] = i2s_in_clk; i2s_parents[1] = i2s_in_clk;
sai_parents[2] = i2s_in_clk; sai_parents[2] = i2s_in_clk;
clk_register_fixed_rate_with_accuracy(NULL, "hsi", NULL, 0, clks[CLK_HSI] = clk_hw_register_fixed_rate_with_accuracy(NULL, "hsi",
16000000, 160000); NULL, 0, 16000000, 160000);
pllcfgr = readl(base + STM32F4_RCC_PLLCFGR); pllcfgr = readl(base + STM32F4_RCC_PLLCFGR);
pllsrc = pllcfgr & BIT(22) ? hse_clk : "hsi"; pllsrc = pllcfgr & BIT(22) ? hse_clk : "hsi";
pllm = pllcfgr & 0x3f; pllm = pllcfgr & 0x3f;
...@@ -1217,7 +1475,8 @@ static void __init stm32f4_rcc_init(struct device_node *np) ...@@ -1217,7 +1475,8 @@ static void __init stm32f4_rcc_init(struct device_node *np)
} }
sys_parents[1] = hse_clk; sys_parents[1] = hse_clk;
clk_register_mux_table(
clks[CLK_SYSCLK] = clk_hw_register_mux_table(
NULL, "sys", sys_parents, ARRAY_SIZE(sys_parents), 0, NULL, "sys", sys_parents, ARRAY_SIZE(sys_parents), 0,
base + STM32F4_RCC_CFGR, 0, 3, 0, NULL, &stm32f4_clk_lock); base + STM32F4_RCC_CFGR, 0, 3, 0, NULL, &stm32f4_clk_lock);
...@@ -1321,6 +1580,11 @@ static void __init stm32f4_rcc_init(struct device_node *np) ...@@ -1321,6 +1580,11 @@ static void __init stm32f4_rcc_init(struct device_node *np)
clks[aux_clk->idx] = hw; clks[aux_clk->idx] = hw;
} }
if (of_device_is_compatible(np, "st,stm32f746-rcc"))
clk_hw_register_fixed_factor(NULL, "hsi_div488", "hsi", 0,
1, 488);
of_clk_add_hw_provider(np, stm32f4_rcc_lookup_clk, NULL); of_clk_add_hw_provider(np, stm32f4_rcc_lookup_clk, NULL);
return; return;
fail: fail:
...@@ -1329,3 +1593,4 @@ static void __init stm32f4_rcc_init(struct device_node *np) ...@@ -1329,3 +1593,4 @@ static void __init stm32f4_rcc_init(struct device_node *np)
} }
CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc, "st,stm32f42xx-rcc", stm32f4_rcc_init); CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc, "st,stm32f42xx-rcc", stm32f4_rcc_init);
CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc, "st,stm32f469-rcc", stm32f4_rcc_init); CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc, "st,stm32f469-rcc", stm32f4_rcc_init);
CLK_OF_DECLARE_DRIVER(stm32f746_rcc, "st,stm32f746-rcc", stm32f4_rcc_init);
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