patches.renesas/0858-ARM-shmobile-marzen-reference-Instantiate-clkdevs-fo.patch

From 9981c110bf2fe60e58a640425e07d4c3dfa545a4 Mon Sep 17 00:00:00 2001
From: Simon Horman <horms+renesas@verge.net.au>
Date: Thu, 15 May 2014 20:32:07 +0900
Subject: ARM: shmobile: marzen-reference: Instantiate clkdevs for SCIF and TMU

Now that the common clock framework is supported, the clock lookup
entries in clock-r8a7779.c are not registered anymore. Devices must
instead reference their clocks in the device tree. However, SCIF and CMT
devices are still instantiated through platform code, and thus need a
clock lookup entry.

Retrieve the SCIF and CMT clock entries by name and register clkdevs for
the corresponding devices. This will be removed when the SCIF and CMT
devices will be instantiated from the device tree.

Based on work for the Koelsch board by Laurent Pinchart.

Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit 2b2084e8d4ae9265a3240722cb8adce06c0f393f)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/board-marzen-reference.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-shmobile/board-marzen-reference.c b/arch/arm/mach-shmobile/board-marzen-reference.c
index f642819009ad..3017040c68be 100644
--- a/arch/arm/mach-shmobile/board-marzen-reference.c
+++ b/arch/arm/mach-shmobile/board-marzen-reference.c
@@ -25,6 +25,7 @@
 #include <mach/r8a7779.h>
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
+#include "clock.h"
 #include "common.h"
 #include "irqs.h"
 
@@ -36,9 +37,27 @@ static void __init marzen_init_timer(void)
 	clocksource_of_init();
 }
 
+#ifdef CONFIG_COMMON_CLK
+/*
+ * This is a really crude hack to provide clkdev support to platform
+ * devices until they get moved to DT.
+ */
+static const struct clk_name clk_names[] __initconst = {
+	{ "scif0", NULL, "sh-sci.0" },
+	{ "scif1", NULL, "sh-sci.1" },
+	{ "scif2", NULL, "sh-sci.2" },
+	{ "scif3", NULL, "sh-sci.3" },
+	{ "scif4", NULL, "sh-sci.4" },
+	{ "scif5", NULL, "sh-sci.5" },
+	{ "tmu0", "fck", "sh-tmu.0" },
+};
+#endif
+
 static void __init marzen_init(void)
 {
-#ifndef CONFIG_COMMON_CLK
+#ifdef CONFIG_COMMON_CLK
+	shmobile_clk_workaround(clk_names, ARRAY_SIZE(clk_names), false);
+#else
 	r8a7779_clock_init();
 #endif
 	r8a7779_add_standard_devices_dt();
-- 
2.1.2