diff options
Diffstat (limited to 'drivers/clk/at91/sama5d2.c')
| -rw-r--r-- | drivers/clk/at91/sama5d2.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c index 84156dc52bff..c16594fce90c 100644 --- a/drivers/clk/at91/sama5d2.c +++ b/drivers/clk/at91/sama5d2.c @@ -40,9 +40,14 @@ static const struct clk_pcr_layout sama5d2_pcr_layout = { static const struct { char *n; char *p; + unsigned long flags; u8 id; } sama5d2_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 = "uhpck", .p = "usbck", .id = 6 }, { .n = "udpck", .p = "usbck", .id = 7 }, @@ -97,6 +102,7 @@ static const struct { static const struct { char *n; + unsigned long flags; u8 id; } sama5d2_periphck[] = { { .n = "dma0_clk", .id = 6, }, @@ -104,7 +110,11 @@ static const struct { { .n = "aes_clk", .id = 9, }, { .n = "aesb_clk", .id = 10, }, { .n = "sha_clk", .id = 12, }, - { .n = "mpddr_clk", .id = 13, }, + /* + * 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 = 13, .flags = CLK_IS_CRITICAL }, { .n = "matrix0_clk", .id = 15, }, { .n = "sdmmc0_hclk", .id = 31, }, { .n = "sdmmc1_hclk", .id = 32, }, @@ -192,14 +202,14 @@ static void __init sama5d2_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; @@ -239,7 +249,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np) if (IS_ERR(regmap_sfr)) regmap_sfr = NULL; - hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck"); + hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck", NULL); if (IS_ERR(hw)) goto err_free; @@ -250,14 +260,14 @@ static void __init sama5d2_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); @@ -290,7 +300,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np) snprintf(name, sizeof(name), "prog%d", i); hw = at91_clk_register_programmable(regmap, name, - parent_names, 6, i, + parent_names, NULL, 6, i, &sama5d2_programmable_layout, NULL); if (IS_ERR(hw)) @@ -301,8 +311,9 @@ static void __init sama5d2_pmc_setup(struct device_node *np) for (i = 0; i < ARRAY_SIZE(sama5d2_systemck); i++) { hw = at91_clk_register_system(regmap, sama5d2_systemck[i].n, - sama5d2_systemck[i].p, - sama5d2_systemck[i].id); + sama5d2_systemck[i].p, NULL, + sama5d2_systemck[i].id, + sama5d2_systemck[i].flags); if (IS_ERR(hw)) goto err_free; @@ -313,9 +324,10 @@ static void __init sama5d2_pmc_setup(struct device_node *np) hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, &sama5d2_pcr_layout, sama5d2_periphck[i].n, - "masterck_div", + "masterck_div", NULL, sama5d2_periphck[i].id, - &range, INT_MIN); + &range, INT_MIN, + sama5d2_periphck[i].flags); if (IS_ERR(hw)) goto err_free; @@ -326,10 +338,10 @@ static void __init sama5d2_pmc_setup(struct device_node *np) hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, &sama5d2_pcr_layout, sama5d2_periph32ck[i].n, - "h32mxck", + "h32mxck", NULL, sama5d2_periph32ck[i].id, &sama5d2_periph32ck[i].r, - INT_MIN); + INT_MIN, 0); if (IS_ERR(hw)) goto err_free; @@ -346,7 +358,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np) hw = at91_clk_register_generated(regmap, &pmc_pcr_lock, &sama5d2_pcr_layout, sama5d2_gck[i].n, - parent_names, NULL, 6, + parent_names, NULL, NULL, 6, sama5d2_gck[i].id, &sama5d2_gck[i].r, sama5d2_gck[i].chg_pid); |