clk: ast2600: Add YCLK control for HACE
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>
diff --git a/drivers/clk/aspeed/clk_ast2600.c b/drivers/clk/aspeed/clk_ast2600.c
index 3a92739..9871a6b 100644
--- a/drivers/clk/aspeed/clk_ast2600.c
+++ b/drivers/clk/aspeed/clk_ast2600.c
@@ -1013,6 +1013,25 @@
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 @@
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;