arch: nios2: Enable the common clk subsystem on Nios2

This patch adds support for common clock framework on Nios2. Clock
framework is commonly used in many drivers, and this patch makes it
available for the entire architecture, not just on a per-driver basis.

Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 44b5da3..4b7c951 100644 (file)
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -6,6 +6,7 @@ config NIOS2
        select ARCH_HAS_SYNC_DMA_FOR_DEVICE
        select ARCH_HAS_UNCACHED_SEGMENT
        select ARCH_NO_SWAP
+       select COMMON_CLK
        select TIMER_OF
        select GENERIC_ATOMIC64
        select GENERIC_CLOCKEVENTS

diff --git a/arch/nios2/platform/platform.c b/arch/nios2/platform/platform.c
index 2a35154..9737a87 100644 (file)
--- a/arch/nios2/platform/platform.c
+++ b/arch/nios2/platform/platform.c
@@ -15,6 +15,12 @@
 #include <linux/slab.h>
 #include <linux/sys_soc.h>
 #include <linux/io.h>
+#include <linux/clk-provider.h>
+
+static const struct of_device_id clk_match[] __initconst = {
+       { .compatible = "fixed-clock", .data = of_fixed_clk_setup, },
+       {}
+};
 
 static int __init nios2_soc_device_init(void)
 {
@@ -38,6 +44,8 @@ static int __init nios2_soc_device_init(void)
                }
        }
 
+       of_clk_init(clk_match);
+
        return 0;
 }