diff options
Diffstat (limited to 'drivers/clk/bcm/clk-bcm2835.c')
| -rw-r--r-- | drivers/clk/bcm/clk-bcm2835.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index 015e687ffabe..c74ed3fd496d 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -88,10 +88,23 @@ #define CM_HSMDIV 0x08c #define CM_OTPCTL 0x090 #define CM_OTPDIV 0x094 +#define CM_PCMCTL 0x098 +#define CM_PCMDIV 0x09c #define CM_PWMCTL 0x0a0 #define CM_PWMDIV 0x0a4 +#define CM_SLIMCTL 0x0a8 +#define CM_SLIMDIV 0x0ac #define CM_SMICTL 0x0b0 #define CM_SMIDIV 0x0b4 +/* no definition for 0x0b8 and 0x0bc */ +#define CM_TCNTCTL 0x0c0 +#define CM_TCNTDIV 0x0c4 +#define CM_TECCTL 0x0c8 +#define CM_TECDIV 0x0cc +#define CM_TD0CTL 0x0d0 +#define CM_TD0DIV 0x0d4 +#define CM_TD1CTL 0x0d8 +#define CM_TD1DIV 0x0dc #define CM_TSENSCTL 0x0e0 #define CM_TSENSDIV 0x0e4 #define CM_TIMERCTL 0x0e8 @@ -311,21 +324,18 @@ void __init bcm2835_init_clocks(void) struct clk *clk; int ret; - clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, - 126000000); + clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, 0, 126000000); if (IS_ERR(clk)) pr_err("apb_pclk not registered\n"); - clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT, - 3000000); + clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, 0, 3000000); if (IS_ERR(clk)) pr_err("uart0_pclk not registered\n"); ret = clk_register_clkdev(clk, NULL, "20201000.uart"); if (ret) pr_err("uart0_pclk alias not registered\n"); - clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT, - 125000000); + clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, 0, 125000000); if (IS_ERR(clk)) pr_err("uart1_pclk not registered\n"); ret = clk_register_clkdev(clk, NULL, "20215000.uart"); @@ -1060,16 +1070,7 @@ static long bcm2835_pll_divider_round_rate(struct clk_hw *hw, static unsigned long bcm2835_pll_divider_get_rate(struct clk_hw *hw, unsigned long parent_rate) { - struct bcm2835_pll_divider *divider = bcm2835_pll_divider_from_hw(hw); - struct bcm2835_cprman *cprman = divider->cprman; - const struct bcm2835_pll_divider_data *data = divider->data; - u32 div = cprman_read(cprman, data->a2w_reg); - - div &= (1 << A2W_PLL_DIV_BITS) - 1; - if (div == 0) - div = 256; - - return parent_rate / div; + return clk_divider_ops.recalc_rate(hw, parent_rate); } static void bcm2835_pll_divider_off(struct clk_hw *hw) @@ -1107,13 +1108,15 @@ static int bcm2835_pll_divider_set_rate(struct clk_hw *hw, struct bcm2835_pll_divider *divider = bcm2835_pll_divider_from_hw(hw); struct bcm2835_cprman *cprman = divider->cprman; const struct bcm2835_pll_divider_data *data = divider->data; - u32 cm; - int ret; + u32 cm, div, max_div = 1 << A2W_PLL_DIV_BITS; - ret = clk_divider_ops.set_rate(hw, rate, parent_rate); - if (ret) - return ret; + div = DIV_ROUND_UP_ULL(parent_rate, rate); + + div = min(div, max_div); + if (div == max_div) + div = 0; + cprman_write(cprman, data->a2w_reg, div); cm = cprman_read(cprman, data->cm_reg); cprman_write(cprman, data->cm_reg, cm | data->load_mask); cprman_write(cprman, data->cm_reg, cm & ~data->load_mask); @@ -1428,7 +1431,7 @@ bcm2835_register_pll_divider(struct bcm2835_cprman *cprman, divider->div.reg = cprman->regs + data->a2w_reg; divider->div.shift = A2W_PLL_DIV_SHIFT; divider->div.width = A2W_PLL_DIV_BITS; - divider->div.flags = 0; + divider->div.flags = CLK_DIVIDER_MAX_AT_ZERO; divider->div.lock = &cprman->regs_lock; divider->div.hw.init = &init; divider->div.table = NULL; |