From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chen-Yu Tsai Subject: [PATCH 03/11] clk: sunxi-ng: mux: Get closest parent rate possible with CLK_SET_RATE_PARENT Date: Tue, 24 Jan 2017 10:32:22 +0800 Message-ID: <20170124023230.3990-4-wens@csie.org> References: <20170124023230.3990-1-wens@csie.org> Reply-To: wens-jdAy2FN1RRM@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Sender: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org In-Reply-To: <20170124023230.3990-1-wens-jdAy2FN1RRM@public.gmane.org> List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , To: Maxime Ripard , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd Cc: Chen-Yu Tsai , linux-clk-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-Id: devicetree@vger.kernel.org If the CLK_SET_RATE_PARENT flag is set, we want to try getting the closest parent rate. Signed-off-by: Chen-Yu Tsai --- drivers/clk/sunxi-ng/ccu_mux.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/clk/sunxi-ng/ccu_mux.c b/drivers/clk/sunxi-ng/ccu_mux.c index 7cee17cf9c19..c6e83ba47fa4 100644 --- a/drivers/clk/sunxi-ng/ccu_mux.c +++ b/drivers/clk/sunxi-ng/ccu_mux.c @@ -93,7 +93,18 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common, if (!parent) continue; - parent_rate = clk_hw_get_rate(parent); + if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) { + struct clk_rate_request parent_req = *req; + int ret = __clk_determine_rate(parent, &parent_req); + + if (ret) + continue; + + parent_rate = parent_req.rate; + } else { + parent_rate = clk_hw_get_rate(parent); + } + adj_parent_rate = parent_rate; ccu_mux_helper_adjust_parent_for_prediv(common, cm, i, &adj_parent_rate); -- 2.11.0