From mboxrd@z Thu Jan 1 00:00:00 1970 From: rnayak@ti.com (Rajendra Nayak) Date: Thu, 12 Dec 2013 17:08:27 +0530 Subject: [PATCH v2 1/3] ARM: OMAP2+: Add support to parse 'main_clk' info from DT In-Reply-To: <1386848309-14076-1-git-send-email-rnayak@ti.com> References: <1386848309-14076-1-git-send-email-rnayak@ti.com> Message-ID: <1386848309-14076-2-git-send-email-rnayak@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org With clocks for OMAP moving to DT, its now possible to pass the 'main_clk' data for each device from DT instead of having it in hwmod. Signed-off-by: Rajendra Nayak --- arch/arm/mach-omap2/omap_hwmod.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index dfa878b..f22bbbb 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -730,14 +730,18 @@ static int _del_initiator_dep(struct omap_hwmod *oh, struct omap_hwmod *init_oh) * functional clock pointer) if a main_clk is present. Returns 0 on * success or -EINVAL on error. */ -static int _init_main_clk(struct omap_hwmod *oh) +static int _init_main_clk(struct omap_hwmod *oh, struct device_node *np) { int ret = 0; - if (!oh->main_clk) + if (!oh->main_clk && !of_get_property(np, "clocks", NULL)) return 0; - oh->_clk = clk_get(NULL, oh->main_clk); + if (oh->main_clk) + oh->_clk = clk_get(NULL, oh->main_clk); + else + oh->_clk = of_clk_get_by_name(np, "fck"); + if (IS_ERR(oh->_clk)) { pr_warning("omap_hwmod: %s: cannot clk_get main_clk %s\n", oh->name, oh->main_clk); @@ -1565,19 +1569,26 @@ static int _init_clkdm(struct omap_hwmod *oh) * Resolves all clock names embedded in the hwmod. Returns 0 on * success, or a negative error code on failure. */ -static int _init_clocks(struct omap_hwmod *oh, void *data) +static int _init_clocks(struct omap_hwmod *oh, void *data, + int index, struct device_node *np) { int ret = 0; if (oh->_state != _HWMOD_STATE_REGISTERED) return 0; + if (index) { + pr_warn("omap_hwmod: %s unable to parse clock data from %s\n", + oh->name, np->name); + np = NULL; + } + pr_debug("omap_hwmod: %s: looking up clocks\n", oh->name); if (soc_ops.init_clkdm) ret |= soc_ops.init_clkdm(oh); - ret |= _init_main_clk(oh); + ret |= _init_main_clk(oh, np); ret |= _init_interface_clks(oh); ret |= _init_opt_clks(oh); @@ -2500,7 +2511,7 @@ static int __init _init(struct omap_hwmod *oh, void *data) } } - r = _init_clocks(oh, NULL); + r = _init_clocks(oh, NULL, index, np); if (r < 0) { WARN(1, "omap_hwmod: %s: couldn't init clocks\n", oh->name); return -EINVAL; -- 1.7.9.5