From: Joel Stanley joel@jms.id.au
Add YCLK enable for HACE, the HW hash engine of ASPEED AST2600 SoCs.
Signed-off-by: Joel Stanley joel@jms.id.au Signed-off-by: Chia-Wei Wang chiawei_wang@aspeedtech.com --- .../arm/include/asm/arch-aspeed/scu_ast2600.h | 5 +++-- drivers/clk/aspeed/clk_ast2600.c | 22 +++++++++++++++++++ 2 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/arch-aspeed/scu_ast2600.h b/arch/arm/include/asm/arch-aspeed/scu_ast2600.h index a205fb1f76..d7b500f656 100644 --- a/arch/arm/include/asm/arch-aspeed/scu_ast2600.h +++ b/arch/arm/include/asm/arch-aspeed/scu_ast2600.h @@ -10,8 +10,9 @@ #define SCU_CLKGATE1_EMMC BIT(27) #define SCU_CLKGATE1_MAC2 BIT(21) #define SCU_CLKGATE1_MAC1 BIT(20) -#define SCU_CLKGATE1_USB_HUB BIT(14) -#define SCU_CLKGATE1_USB_HOST2 BIT(7) +#define SCU_CLKGATE1_USB_HUB BIT(14) +#define SCU_CLKGATE1_HACE BIT(13) +#define SCU_CLKGATE1_USB_HOST2 BIT(7)
#define SCU_CLKGATE2_FSI BIT(30) #define SCU_CLKGATE2_MAC4 BIT(21) diff --git a/drivers/clk/aspeed/clk_ast2600.c b/drivers/clk/aspeed/clk_ast2600.c index 3a92739f5c..9871a6bdbf 100644 --- a/drivers/clk/aspeed/clk_ast2600.c +++ b/drivers/clk/aspeed/clk_ast2600.c @@ -1013,6 +1013,25 @@ static ulong ast2600_enable_usbbhclk(struct ast2600_scu *scu) return 0; }
+static ulong ast2600_enable_haceclk(struct ast2600_scu *scu) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + reset_bit = BIT(ASPEED_RESET_HACE); + clkgate_bit = SCU_CLKGATE1_HACE; + + /* + * we don't do reset assertion here as HACE + * shares the same reset control with ACRY + */ + writel(clkgate_bit, &scu->clkgate_clr1); + mdelay(20); + writel(reset_bit, &scu->modrst_clr1); + + return 0; +} + static int ast2600_clk_enable(struct clk *clk) { struct ast2600_clk_priv *priv = dev_get_priv(clk->dev); @@ -1051,6 +1070,9 @@ static int ast2600_clk_enable(struct clk *clk) case ASPEED_CLK_GATE_USBPORT2CLK: ast2600_enable_usbbhclk(priv->scu); break; + case ASPEED_CLK_GATE_YCLK: + ast2600_enable_haceclk(priv->scu); + break; default: pr_err("can't enable clk\n"); return -ENOENT;