| Message ID | 1390333660-30573-6-git-send-email-chf.fritz@googlemail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 01/21/2014 01:47 PM, Christoph Fritz wrote: > Full device tree support for clock control is not yet accomplished. Until > then, configure the 24Mhz of sys_clkout2 to feed an USB-Hub here. you may want to look at next-20140120 or later next tag for your development. > > Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com> > --- > arch/arm/mach-omap2/pdata-quirks.c | 37 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 37 insertions(+) > > diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c > index bce8020..07d05f6 100644 > --- a/arch/arm/mach-omap2/pdata-quirks.c > +++ b/arch/arm/mach-omap2/pdata-quirks.c > @@ -95,6 +95,43 @@ static void __init omap3_zoom_legacy_init(void) > > static void __init omap3_dbb056_legacy_init(void) > { > + struct clk *clkout2; > + struct clk *cm96fck; > + > + /* Reparent clkout2 to 96M_FCK */ > + pr_info("a83x-quirk: Late Reparent clkout2 to 96M_FCK\n"); > + clkout2 = clk_get(NULL, "clkout2_src_ck"); > + if(clkout2 < 0) { > + pr_err("a83x-quirk: couldn't get clkout2_src_ck\n"); > + return; > + } > + cm96fck = clk_get(NULL, "cm_96m_fck"); > + if(cm96fck < 0) { > + pr_err("a83x-quirk: couldn't get cm_96m_fck\n"); > + return; > + } > + if(clk_set_parent(clkout2, cm96fck) < 0) { > + pr_err("a83x-quirk: couldn't reparent clkout2_src_ck\n"); > + return; > + } > + > + /* Set clkout2 to 24MHz for internal usb hub*/ > + pr_info("a83x-quirk: Set clkout2 to 24MHz for internal usb hub\n"); > + clkout2 = clk_get(NULL, "sys_clkout2"); > + if(clkout2 < 0) { > + pr_err("a83x-quirk: couldn't get sys_clkout2\n"); > + return; > + } > + if(clk_set_rate(clkout2, 24000000) < 0) { > + printk(KERN_ERR "board-omap3evm: couldn't set sys_clkout2 rate\n"); > + return; > + } > + if(clk_prepare_enable(clkout2) < 0) { > + pr_err("a83x-quirk: couldn't enable sys_clkout2\n"); > + return; > + } > + > + /* Initialize display */ > omap3_dbb056_display_init_of(); > } > #endif /* CONFIG_ARCH_OMAP3 */ >
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index bce8020..07d05f6 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -95,6 +95,43 @@ static void __init omap3_zoom_legacy_init(void) static void __init omap3_dbb056_legacy_init(void) { + struct clk *clkout2; + struct clk *cm96fck; + + /* Reparent clkout2 to 96M_FCK */ + pr_info("a83x-quirk: Late Reparent clkout2 to 96M_FCK\n"); + clkout2 = clk_get(NULL, "clkout2_src_ck"); + if(clkout2 < 0) { + pr_err("a83x-quirk: couldn't get clkout2_src_ck\n"); + return; + } + cm96fck = clk_get(NULL, "cm_96m_fck"); + if(cm96fck < 0) { + pr_err("a83x-quirk: couldn't get cm_96m_fck\n"); + return; + } + if(clk_set_parent(clkout2, cm96fck) < 0) { + pr_err("a83x-quirk: couldn't reparent clkout2_src_ck\n"); + return; + } + + /* Set clkout2 to 24MHz for internal usb hub*/ + pr_info("a83x-quirk: Set clkout2 to 24MHz for internal usb hub\n"); + clkout2 = clk_get(NULL, "sys_clkout2"); + if(clkout2 < 0) { + pr_err("a83x-quirk: couldn't get sys_clkout2\n"); + return; + } + if(clk_set_rate(clkout2, 24000000) < 0) { + printk(KERN_ERR "board-omap3evm: couldn't set sys_clkout2 rate\n"); + return; + } + if(clk_prepare_enable(clkout2) < 0) { + pr_err("a83x-quirk: couldn't enable sys_clkout2\n"); + return; + } + + /* Initialize display */ omap3_dbb056_display_init_of(); } #endif /* CONFIG_ARCH_OMAP3 */
Full device tree support for clock control is not yet accomplished. Until then, configure the 24Mhz of sys_clkout2 to feed an USB-Hub here. Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com> --- arch/arm/mach-omap2/pdata-quirks.c | 37 ++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+)