From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: [PATCH v3 15/16] clk: shmobile: mstp: Consider "zb_clk" suitable for power management Date: Wed, 1 Jul 2015 17:58:09 +0200 Message-ID: <1435766290-3005-16-git-send-email-geert+renesas@glider.be> References: <1435766290-3005-1-git-send-email-geert+renesas@glider.be> Return-path: In-Reply-To: <1435766290-3005-1-git-send-email-geert+renesas@glider.be> Sender: linux-sh-owner@vger.kernel.org To: Simon Horman , Magnus Damm , Michael Turquette , Stephen Boyd , Laurent Pinchart , "Rafael J. Wysocki" , Kevin Hilman , Ulf Hansson Cc: linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, linux-sh@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven List-Id: devicetree@vger.kernel.org Currently the CPG/MSTP Clock Domain code looks for MSTP clocks to power manage a device. Unfortunately, on R-Mobile APE6 (r8a73a4) and SH-Mobile AG5 (sh73a0), the Bus State Controller (BSC) is not power-managed by an MSTP clock, but by a plain CPG clock (zb_clk). Add a special case to handle this, so the clock is properly managed, and devices connected to the BSC work as expected. Signed-off-by: Geert Uytterhoeven --- v3: - Use "CPG/MSTP Clock Domain" instead of "CPG Clock Domain", v2: - New. --- drivers/clk/shmobile/clk-mstp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c index 9b4451304f5732d4..9975695ca814614f 100644 --- a/drivers/clk/shmobile/clk-mstp.c +++ b/drivers/clk/shmobile/clk-mstp.c @@ -258,6 +258,10 @@ int cpg_mstp_attach_dev(struct generic_pm_domain *domain, struct device *dev) "renesas,cpg-mstp-clocks")) goto found; + /* BSC on r8a73a4/sh73a0 uses zb_clk instead of an mstp clock*/ + if (!strcmp(clkspec.np->name, "zb_clk")) + goto found; + of_node_put(clkspec.np); i++; } -- 1.9.1