[U-Boot] [PATCH V3 4/6] imx: mx6qp Enable PRG clock for IPU

Peng Fan Peng.Fan at freescale.com
Mon Jun 29 16:58:05 CEST 2015


The i.MX6DQP has a PRG module, need to enable its clock for using IPU.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Signed-off-by: Brown Oliver <B37094 at freescale.com>
Signed-off-by: Ye.Li <B37916 at freescale.com>
---

 Changes v3:
  Remove ipu qos settings

 Changes v2:
  1. runtime check
  2. introduce ipu qos settings for better performance

 arch/arm/cpu/armv7/mx6/clock.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index 446fe84..eb2712d 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -866,6 +866,16 @@ void enable_ipu_clock(void)
 	reg = readl(&mxc_ccm->CCGR3);
 	reg |= MXC_CCM_CCGR3_IPU1_IPU_MASK;
 	writel(reg, &mxc_ccm->CCGR3);
+
+	if (is_mx6dqp()) {
+		reg = readl(&mxc_ccm->CCGR6);
+		reg |= MXC_CCM_CCGR6_PRG_CLK0_MASK;
+		writel(reg, &mxc_ccm->CCGR6);
+
+		reg = readl(&mxc_ccm->CCGR3);
+		reg |= MXC_CCM_CCGR3_IPU2_IPU_MASK;
+		writel(reg, &mxc_ccm->CCGR3);
+	}
 }
 #endif
 /***************************************************/
-- 
1.8.4




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