ARM: shmobile: koelsch-reference: Work around core clock issues
authorGeert Uytterhoeven <geert+renesas@linux-m68k.org>
Thu, 13 Mar 2014 14:29:30 +0000 (15:29 +0100)
committerSimon Horman <horms+renesas@verge.net.au>
Mon, 14 Apr 2014 02:30:39 +0000 (11:30 +0900)
Due to issues with runtime PM clock management, clocks not explicitly
managed by their drivers may not be enabled at all, or be inadvertently
disabled by the clk_disable_unused() late initcall.

Until this is fixed, add a temporary workaround, calling
shmobile_clk_workaround() with enable == true.

For now this enables the clocks for: ether, i2c2, msiof0, qspi_mod, and
thermal. More clocks can be added if needed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
arch/arm/mach-shmobile/board-koelsch-reference.c

index 1e6a4361c0eb4a41e9233101d7da8f40bc9c0cfe..a39114a1fe1b24c5a6727566f23b266ad240982c 100644 (file)
@@ -107,9 +107,21 @@ static const struct clk_name clk_names[] __initconst = {
        { "lvds0", "lvds.0", "rcar-du-r8a7791" },
 };
 
+/*
+ * This is a really crude hack to work around core platform clock issues
+ */
+static const struct clk_name clk_enables[] = {
+       { "ether", NULL, "ee700000.ethernet" },
+       { "i2c2", NULL, "e6530000.i2c" },
+       { "msiof0", NULL, "e6e20000.spi" },
+       { "qspi_mod", NULL, "e6b10000.spi" },
+       { "thermal", NULL, "e61f0000.thermal" },
+};
+
 static void __init koelsch_add_standard_devices(void)
 {
        shmobile_clk_workaround(clk_names, ARRAY_SIZE(clk_names), false);
+       shmobile_clk_workaround(clk_enables, ARRAY_SIZE(clk_enables), true);
        r8a7791_add_dt_devices();
        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);