clk/zynq/clkc: Add CLK_SET_RATE_PARENT flag to ethernet muxes

Zynq's Ethernet clocks are created by the following hierarchy:
	mux0 ---> div0 ---> div1 ---> mux1 ---> gate
Rate change requests on the gate have to propagate all the way up to
div0 to properly leverage all dividers. Mux1 was missing the
CLK_SET_RATE_PARENT flag, which is required to achieve this.

This does not fix a specific regression but the clock driver was merged
for 3.11-rc1, so best to fix the known bugs before the release.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: added to changelog]

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c
index 515a5732d391..089d3e30e221 100644
--- a/drivers/clk/zynq/clkc.c
+++ b/drivers/clk/zynq/clkc.c
@@ -365,8 +365,9 @@ static void __init zynq_clk_setup(struct device_node *np)
                         CLK_SET_RATE_PARENT, SLCR_GEM0_CLK_CTRL, 20, 6,
                         CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
                         &gem0clk_lock);
-        clk = clk_register_mux(NULL, "gem0_emio_mux", gem0_mux_parents, 2, 0,
-                        SLCR_GEM0_CLK_CTRL, 6, 1, 0, &gem0clk_lock);
+        clk = clk_register_mux(NULL, "gem0_emio_mux", gem0_mux_parents, 2,
+                        CLK_SET_RATE_PARENT, SLCR_GEM0_CLK_CTRL, 6, 1, 0,
+                        &gem0clk_lock);
         clks[gem0] = clk_register_gate(NULL, clk_output_name[gem0],
                         "gem0_emio_mux", CLK_SET_RATE_PARENT,
                         SLCR_GEM0_CLK_CTRL, 0, 0, &gem0clk_lock);
@@ -387,8 +388,9 @@ static void __init zynq_clk_setup(struct device_node *np)
                         CLK_SET_RATE_PARENT, SLCR_GEM1_CLK_CTRL, 20, 6,
                         CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
                         &gem1clk_lock);
-        clk = clk_register_mux(NULL, "gem1_emio_mux", gem1_mux_parents, 2, 0,
-                        SLCR_GEM1_CLK_CTRL, 6, 1, 0, &gem1clk_lock);
+        clk = clk_register_mux(NULL, "gem1_emio_mux", gem1_mux_parents, 2,
+                        CLK_SET_RATE_PARENT, SLCR_GEM1_CLK_CTRL, 6, 1, 0,
+                        &gem1clk_lock);
         clks[gem1] = clk_register_gate(NULL, clk_output_name[gem1],
                         "gem1_emio_mux", CLK_SET_RATE_PARENT,
                         SLCR_GEM1_CLK_CTRL, 0, 0, &gem1clk_lock);