[PATCH v2 4/5] ARM: OMAP2+: Add pdata quirk for sys_clkout2 for omap3 DBB056

[Christoph Fritz]

Full device tree support for clock control is not yet accomplished. Until
then, configure the 24Mhz of sys_clkout2 to feed an USB-Hub here.

Signed-off-by: Christoph Fritz <chf.fritz at googlemail.com>
---
 arch/arm/mach-omap2/pdata-quirks.c |   37 ++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index a58590f..9ef7ca8 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -171,6 +171,43 @@ static void __init am3517_evm_legacy_init(void)
 }
 static void __init omap3_dbb056_legacy_init(void)
 {
+	struct clk *clkout2;
+	struct clk *cm96fck;
+
+	/* Reparent clkout2 to 96M_FCK */
+	pr_info("a83x-quirk: Late Reparent clkout2 to 96M_FCK\n");
+	clkout2 = clk_get(NULL, "clkout2_src_ck");
+	if(clkout2 < 0) {
+		pr_err("a83x-quirk: couldn't get clkout2_src_ck\n");
+		return;
+	}
+	cm96fck = clk_get(NULL, "cm_96m_fck");
+	if(cm96fck < 0) {
+		pr_err("a83x-quirk: couldn't get cm_96m_fck\n");
+		return;
+	}
+	if(clk_set_parent(clkout2, cm96fck) < 0) {
+		pr_err("a83x-quirk: couldn't reparent clkout2_src_ck\n");
+		return;
+	}
+
+	/* Set clkout2 to 24MHz for internal usb hub*/
+	pr_info("a83x-quirk: Set clkout2 to 24MHz for internal usb hub\n");
+	clkout2 = clk_get(NULL, "sys_clkout2");
+	if(clkout2 < 0) {
+		pr_err("a83x-quirk: couldn't get sys_clkout2\n");
+		return;
+	}
+	if(clk_set_rate(clkout2, 24000000) < 0) {
+		printk(KERN_ERR "board-omap3evm: couldn't set sys_clkout2 rate\n");
+		return;
+	}
+	if(clk_prepare_enable(clkout2) < 0) {
+		pr_err("a83x-quirk: couldn't enable sys_clkout2\n");
+		return;
+	}
+
+	/* Initialize display */
 	omap3_dbb056_display_init_of();
 }
 #endif /* CONFIG_ARCH_OMAP3 */
-- 
1.7.10.4