diff options
Diffstat (limited to 'drivers/clk/clk-aspeed.c')
| -rw-r--r-- | drivers/clk/clk-aspeed.c | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/drivers/clk/clk-aspeed.c b/drivers/clk/clk-aspeed.c index 5eb50c31e455..dd17a818dff8 100644 --- a/drivers/clk/clk-aspeed.c +++ b/drivers/clk/clk-aspeed.c @@ -16,6 +16,8 @@ #define ASPEED_NUM_CLKS 35 +#define ASPEED_RESET2_OFFSET 32 + #define ASPEED_RESET_CTRL 0x04 #define ASPEED_CLK_SELECTION 0x08 #define ASPEED_CLK_STOP_CTRL 0x0c @@ -30,6 +32,7 @@ #define CLKIN_25MHZ_EN BIT(23) #define AST2400_CLK_SOURCE_SEL BIT(18) #define ASPEED_CLK_SELECTION_2 0xd8 +#define ASPEED_RESET_CTRL2 0xd4 /* Globally visible clocks */ static DEFINE_SPINLOCK(aspeed_clk_lock); @@ -291,6 +294,7 @@ struct aspeed_reset { #define to_aspeed_reset(p) container_of((p), struct aspeed_reset, rcdev) static const u8 aspeed_resets[] = { + /* SCU04 resets */ [ASPEED_RESET_XDMA] = 25, [ASPEED_RESET_MCTP] = 24, [ASPEED_RESET_ADC] = 23, @@ -300,38 +304,62 @@ static const u8 aspeed_resets[] = { [ASPEED_RESET_PCIVGA] = 8, [ASPEED_RESET_I2C] = 2, [ASPEED_RESET_AHB] = 1, + + /* + * SCUD4 resets start at an offset to separate them from + * the SCU04 resets. + */ + [ASPEED_RESET_CRT1] = ASPEED_RESET2_OFFSET + 5, }; static int aspeed_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id) { struct aspeed_reset *ar = to_aspeed_reset(rcdev); - u32 rst = BIT(aspeed_resets[id]); + u32 reg = ASPEED_RESET_CTRL; + u32 bit = aspeed_resets[id]; + + if (bit >= ASPEED_RESET2_OFFSET) { + bit -= ASPEED_RESET2_OFFSET; + reg = ASPEED_RESET_CTRL2; + } - return regmap_update_bits(ar->map, ASPEED_RESET_CTRL, rst, 0); + return regmap_update_bits(ar->map, reg, BIT(bit), 0); } static int aspeed_reset_assert(struct reset_controller_dev *rcdev, unsigned long id) { struct aspeed_reset *ar = to_aspeed_reset(rcdev); - u32 rst = BIT(aspeed_resets[id]); + u32 reg = ASPEED_RESET_CTRL; + u32 bit = aspeed_resets[id]; - return regmap_update_bits(ar->map, ASPEED_RESET_CTRL, rst, rst); + if (bit >= ASPEED_RESET2_OFFSET) { + bit -= ASPEED_RESET2_OFFSET; + reg = ASPEED_RESET_CTRL2; + } + + return regmap_update_bits(ar->map, reg, BIT(bit), BIT(bit)); } static int aspeed_reset_status(struct reset_controller_dev *rcdev, unsigned long id) { struct aspeed_reset *ar = to_aspeed_reset(rcdev); - u32 val, rst = BIT(aspeed_resets[id]); - int ret; + u32 reg = ASPEED_RESET_CTRL; + u32 bit = aspeed_resets[id]; + int ret, val; + + if (bit >= ASPEED_RESET2_OFFSET) { + bit -= ASPEED_RESET2_OFFSET; + reg = ASPEED_RESET_CTRL2; + } - ret = regmap_read(ar->map, ASPEED_RESET_CTRL, &val); + ret = regmap_read(ar->map, reg, &val); if (ret) return ret; - return !!(val & rst); + return !!(val & BIT(bit)); } static const struct reset_control_ops aspeed_reset_ops = { |