diff options
Diffstat (limited to 'drivers/clk/at91/sama5d3.c')
| -rw-r--r-- | drivers/clk/at91/sama5d3.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c index 7e93c6edf305..522ce6031446 100644 --- a/drivers/clk/at91/sama5d3.c +++ b/drivers/clk/at91/sama5d3.c @@ -40,9 +40,14 @@ static const struct clk_pcr_layout sama5d3_pcr_layout = { static const struct { char *n; char *p; + unsigned long flags; u8 id; } sama5d3_systemck[] = { - { .n = "ddrck", .p = "masterck_div", .id = 2 }, + /* + * ddrck feeds DDR controller and is enabled by bootloader thus we need + * to keep it enabled in case there is no Linux consumer for it. + */ + { .n = "ddrck", .p = "masterck_div", .id = 2, .flags = CLK_IS_CRITICAL }, { .n = "lcdck", .p = "masterck_div", .id = 3 }, { .n = "smdck", .p = "smdclk", .id = 4 }, { .n = "uhpck", .p = "usbck", .id = 6 }, @@ -56,6 +61,7 @@ static const struct { char *n; u8 id; struct clk_range r; + unsigned long flags; } sama5d3_periphck[] = { { .n = "dbgu_clk", .id = 2, }, { .n = "hsmc_clk", .id = 5, }, @@ -99,7 +105,11 @@ static const struct { { .n = "tdes_clk", .id = 44, }, { .n = "trng_clk", .id = 45, }, { .n = "fuse_clk", .id = 48, }, - { .n = "mpddr_clk", .id = 49, }, + /* + * mpddr_clk feeds DDR controller and is enabled by bootloader thus we + * need to keep it enabled in case there is no Linux consumer for it. + */ + { .n = "mpddr_clk", .id = 49, .flags = CLK_IS_CRITICAL }, }; static void __init sama5d3_pmc_setup(struct device_node *np) @@ -140,14 +150,14 @@ static void __init sama5d3_pmc_setup(struct device_node *np) bypass = of_property_read_bool(np, "atmel,osc-bypass"); - hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, + hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, NULL, bypass); if (IS_ERR(hw)) goto err_free; parent_names[0] = "main_rc_osc"; parent_names[1] = "main_osc"; - hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2); + hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, NULL, 2); if (IS_ERR(hw)) goto err_free; @@ -162,7 +172,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np) sama5d3_pmc->chws[PMC_PLLACK] = hw; - hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck"); + hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck", NULL); if (IS_ERR(hw)) goto err_free; @@ -173,14 +183,14 @@ static void __init sama5d3_pmc_setup(struct device_node *np) parent_names[2] = "plladivck"; parent_names[3] = "utmick"; hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4, - parent_names, + parent_names, NULL, &at91sam9x5_master_layout, &mck_characteristics, &mck_lock); if (IS_ERR(hw)) goto err_free; hw = at91_clk_register_master_div(regmap, "masterck_div", - "masterck_pres", + "masterck_pres", NULL, &at91sam9x5_master_layout, &mck_characteristics, &mck_lock, CLK_SET_RATE_GATE, 0); @@ -210,7 +220,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np) snprintf(name, sizeof(name), "prog%d", i); hw = at91_clk_register_programmable(regmap, name, - parent_names, 5, i, + parent_names, NULL, 5, i, &at91sam9x5_programmable_layout, NULL); if (IS_ERR(hw)) @@ -221,8 +231,9 @@ static void __init sama5d3_pmc_setup(struct device_node *np) for (i = 0; i < ARRAY_SIZE(sama5d3_systemck); i++) { hw = at91_clk_register_system(regmap, sama5d3_systemck[i].n, - sama5d3_systemck[i].p, - sama5d3_systemck[i].id); + sama5d3_systemck[i].p, NULL, + sama5d3_systemck[i].id, + sama5d3_systemck[i].flags); if (IS_ERR(hw)) goto err_free; @@ -233,10 +244,11 @@ static void __init sama5d3_pmc_setup(struct device_node *np) hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, &sama5d3_pcr_layout, sama5d3_periphck[i].n, - "masterck_div", + "masterck_div", NULL, sama5d3_periphck[i].id, &sama5d3_periphck[i].r, - INT_MIN); + INT_MIN, + sama5d3_periphck[i].flags); if (IS_ERR(hw)) goto err_free; |