diff options
Diffstat (limited to 'drivers/clk/at91/sama5d4.c')
| -rw-r--r-- | drivers/clk/at91/sama5d4.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c index 1a14a9bce308..e876ec971a39 100644 --- a/drivers/clk/at91/sama5d4.c +++ b/drivers/clk/at91/sama5d4.c @@ -39,9 +39,14 @@ static const struct clk_pcr_layout sama5d4_pcr_layout = { static const struct { char *n; char *p; + unsigned long flags; u8 id; } sama5d4_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 }, @@ -103,12 +108,17 @@ static const struct { static const struct { char *n; + unsigned long flags; u8 id; } sama5d4_periphck[] = { { .n = "dma0_clk", .id = 8 }, { .n = "cpkcc_clk", .id = 10 }, { .n = "aesb_clk", .id = 13 }, - { .n = "mpddr_clk", .id = 16 }, + /* + * 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 = 16, .flags = CLK_IS_CRITICAL }, { .n = "matrix0_clk", .id = 18 }, { .n = "vdec_clk", .id = 19 }, { .n = "dma1_clk", .id = 50 }, @@ -245,7 +255,8 @@ static void __init sama5d4_pmc_setup(struct device_node *np) for (i = 0; i < ARRAY_SIZE(sama5d4_systemck); i++) { hw = at91_clk_register_system(regmap, sama5d4_systemck[i].n, sama5d4_systemck[i].p, - sama5d4_systemck[i].id); + sama5d4_systemck[i].id, + sama5d4_systemck[i].flags); if (IS_ERR(hw)) goto err_free; @@ -258,7 +269,8 @@ static void __init sama5d4_pmc_setup(struct device_node *np) sama5d4_periphck[i].n, "masterck_div", sama5d4_periphck[i].id, - &range, INT_MIN); + &range, INT_MIN, + sama5d4_periphck[i].flags); if (IS_ERR(hw)) goto err_free; @@ -271,7 +283,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np) sama5d4_periph32ck[i].n, "h32mxck", sama5d4_periph32ck[i].id, - &range, INT_MIN); + &range, INT_MIN, 0); if (IS_ERR(hw)) goto err_free; |