From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Date: Thu, 13 Mar 2014 14:29:30 +0000 Subject: [PATCH] [RFC] ARM: shmobile: koelsch-reference: Work around core clock issues Message-Id: <1394720970-4749-1-git-send-email-geert@linux-m68k.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org From: Geert Uytterhoeven 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 --- Tested with and without CONFIG_PM_RUNTIME arch/arm/mach-shmobile/board-koelsch-reference.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/mach-shmobile/board-koelsch-reference.c b/arch/arm/mach-shmobile/board-koelsch-reference.c index a760f7f19bc9..040c6b99cde2 100644 --- a/arch/arm/mach-shmobile/board-koelsch-reference.c +++ b/arch/arm/mach-shmobile/board-koelsch-reference.c @@ -107,9 +107,21 @@ static const struct clk_name clk_names[] = { { "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); -- 1.7.9.5