[PATCH 4/4] ARM: shmobile: r8a73a4: add Z2 clock support

[Guennadi Liakhovetski]

The Z2 clock on r8a73a4 is used to clock the 4 Cortex A7 cores on the SoC.
Add a definition for this clock to later use it from the arm_big_little
CPUFreq driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas at gmail.com>
---
 arch/arm/mach-shmobile/clock-r8a73a4.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-shmobile/clock-r8a73a4.c b/arch/arm/mach-shmobile/clock-r8a73a4.c
index 508cb1e..b717e98 100644
--- a/arch/arm/mach-shmobile/clock-r8a73a4.c
+++ b/arch/arm/mach-shmobile/clock-r8a73a4.c
@@ -324,6 +324,21 @@ static struct clk z_clk = {
 	.ops = &zclk_ops,
 };
 
+/*
+ * It seems only 1/2 divider is usable in manual mode. 1/2 / 2/3
+ * switching is only available in auto-DVFS mode
+ */
+SH_FIXED_RATIO_CLK(pll0_div2_clk,	pll0_clk,		div2);
+
+static struct clk z2_clk = {
+	.parent = &pll0_div2_clk,
+	.div_mask = 0x1f,
+	.enable_bit = 0,
+	/* We'll need to access FRQCRB and FRQCRC */
+	.enable_reg = (void __iomem *)FRQCRB,
+	.ops = &zclk_ops,
+};
+
 static struct clk *main_clks[] = {
 	&extalr_clk,
 	&extal1_clk,
@@ -342,6 +357,8 @@ static struct clk *main_clks[] = {
 	&pll2s_clk,
 	&pll2h_clk,
 	&z_clk,
+	&pll0_div2_clk,
+	&z2_clk,
 };
 
 /* DIV4 */
-- 
1.7.2.5