diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-03-07 23:00:48 +0400 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-04-02 06:02:15 +0400 |
| commit | fe7aa82d62d13d97c9a786707c467357cb8bddc3 (patch) | |
| tree | e353234b16d45f5bc276871fe4cc9e5558c82a5a /arch/arm/mach-shmobile/clock-sh73a0.c | |
| parent | 0b7d78202260162057248875b1c9bac70d041e58 (diff) | |
| download | linux-fe7aa82d62d13d97c9a786707c467357cb8bddc3.tar.xz | |
ARM: shmobile: sh73a0: add a TWD clock
Add a TWD clock on sh73a0 for the smp_twd driver to properly update the
clock's frequency upon cpufreq events.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile/clock-sh73a0.c')
| -rw-r--r-- | arch/arm/mach-shmobile/clock-sh73a0.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/clock-sh73a0.c b/arch/arm/mach-shmobile/clock-sh73a0.c index 34b5c5ae4cbd..a57ec151674e 100644 --- a/arch/arm/mach-shmobile/clock-sh73a0.c +++ b/arch/arm/mach-shmobile/clock-sh73a0.c @@ -288,6 +288,20 @@ static struct clk div4_clks[DIV4_NR] = { [DIV4_HP] = DIV4(FRQCRB, 4, 0xdff, 0), }; +static unsigned long twd_recalc(struct clk *clk) +{ + return clk_get_rate(clk->parent) / 4; +} + +static struct sh_clk_ops twd_clk_ops = { + .recalc = twd_recalc, +}; + +static struct clk twd_clk = { + .parent = &div4_clks[DIV4_Z], + .ops = &twd_clk_ops, +}; + enum { DIV6_VCK1, DIV6_VCK2, DIV6_VCK3, DIV6_ZB1, DIV6_FLCTL, DIV6_SDHI0, DIV6_SDHI1, DIV6_SDHI2, DIV6_FSIA, DIV6_FSIB, DIV6_SUB, @@ -482,6 +496,7 @@ static struct clk dsi1phy_clk = { static struct clk *late_main_clks[] = { &dsi0phy_clk, &dsi1phy_clk, + &twd_clk, }; enum { MSTP001, @@ -546,6 +561,7 @@ static struct clk mstp_clks[MSTP_NR] = { static struct clk_lookup lookups[] = { /* main clocks */ CLKDEV_CON_ID("r_clk", &r_clk), + CLKDEV_DEV_ID("smp_twd", &twd_clk), /* smp_twd */ /* DIV6 clocks */ CLKDEV_CON_ID("vck1_clk", &div6_clks[DIV6_VCK1]), |