From: Andre Przywara <andre.przywara@arm.com>
To: Maxime Ripard <maxime.ripard@free-electrons.com>,
Chen-Yu Tsai <wens@csie.org>,
linux-sunxi@googlegroups.com
Cc: "Arnd Bergmann" <arnd@arndb.de>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Emilio López" <emilio@elopez.com.ar>,
"Michael Turquette" <mturquette@baylibre.com>,
"Stephen Boyd" <sboyd@codeaurora.org>,
linux-clk@vger.kernel.org
Subject: [PATCH 09/11] clk: sunxi: add critical-clocks property to mux clocks
Date: Mon, 1 Feb 2016 17:39:28 +0000 [thread overview]
Message-ID: <1454348370-3816-10-git-send-email-andre.przywara@arm.com> (raw)
In-Reply-To: <1454348370-3816-1-git-send-email-andre.przywara@arm.com>
The only reason we match the different root compatible strings when
registering the different sunxi clock types is to provide a list of
critical clocks.
Tell the mux clock (for a start) to get this property from the
device tree, allowing new SoCs to refer to the generic fallback
compatible string when the DT provides the critical clock information.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
drivers/clk/sunxi/clk-sunxi.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 9416e0f3..e1e5a8f 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -644,6 +644,11 @@ static void __init sunxi_mux_clk_setup(struct device_node *node,
goto out_unmap;
}
+ if (of_property_read_bool(node, "critical-clocks")) {
+ pr_debug("marked clock %s as critical\n", clk_name);
+ clk_prepare_enable(clk);
+ }
+
of_clk_add_provider(node, of_clk_src_simple_get, clk);
clk_register_clkdev(clk, clk_name, NULL);
return;
@@ -1064,6 +1069,10 @@ CLK_OF_DECLARE(sun8i_a23_clk_init, "allwinner,sun8i-a23", sun6i_init_clocks);
CLK_OF_DECLARE(sun8i_a33_clk_init, "allwinner,sun8i-a33", sun6i_init_clocks);
CLK_OF_DECLARE(sun8i_h3_clk_init, "allwinner,sun8i-h3", sun6i_init_clocks);
+/*
+ * Those SoCs here either don't have a specific critical clock to
+ * protect or they mark the critical clocks as such in their DT.
+ */
static void __init sunxi_generic_init_clocks(struct device_node *node)
{
sunxi_init_clocks(NULL, 0);
--
2.6.4
next prev parent reply other threads:[~2016-02-01 17:41 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-01 17:39 [PATCH 00/11] arm64: Introduce Allwinner A64 and Pine64 support Andre Przywara
2016-02-01 17:39 ` [PATCH 01/11] irqchip: sun4i: fix compilation outside of arch/arm Andre Przywara
2016-02-02 14:51 ` [tip:irq/urgent] irqchip/sun4i: Fix compilation outside of arch/ arm tip-bot for Andre Przywara
2016-02-02 15:12 ` [PATCH 01/11] irqchip: sun4i: fix compilation outside of arch/arm Matthias Brugger
2016-02-02 15:32 ` Andre Przywara
2016-02-02 16:50 ` Matthias Brugger
2016-02-01 17:39 ` [PATCH 02/11] crypto: sunxi-ss: prevent compilation on 64-bit Andre Przywara
2016-02-02 3:16 ` Herbert Xu
2016-02-02 8:42 ` [linux-sunxi] " LABBE Corentin
2016-02-06 7:46 ` Herbert Xu
2016-02-01 17:39 ` [PATCH 03/11] drivers: rtc: allow compilation of sun6i RTC for all sunxi SoCs Andre Przywara
2016-02-02 9:44 ` Maxime Ripard
2016-02-04 22:58 ` Alexandre Belloni
2016-02-01 17:39 ` [PATCH 04/11] arm64: Introduce Allwinner SoC config option Andre Przywara
2016-02-02 15:20 ` Matthias Brugger
2016-02-02 15:30 ` Andre Przywara
2016-02-02 16:04 ` Arnd Bergmann
2016-02-01 17:39 ` [PATCH 05/11] drivers: pinctrl: add driver for Allwinner A64 SoC Andre Przywara
2016-02-01 18:27 ` Karsten Merker
2016-02-01 18:45 ` [linux-sunxi] " Karsten Merker
2016-02-01 23:02 ` André Przywara
2016-02-01 22:49 ` André Przywara
2016-02-02 1:58 ` [linux-sunxi] " Siarhei Siamashka
2016-02-02 14:24 ` Andre Przywara
2016-02-02 17:37 ` Maxime Ripard
2016-02-02 10:00 ` Maxime Ripard
2016-02-02 10:09 ` Chen-Yu Tsai
2016-02-02 16:53 ` Andre Przywara
2016-02-04 16:51 ` Maxime Ripard
2016-02-08 15:54 ` Rob Herring
2016-02-08 15:58 ` Andre Przywara
2016-02-09 17:12 ` Maxime Ripard
2016-02-01 17:39 ` [PATCH 06/11] clk: sunxi: add generic multi-parent bus clock gates driver Andre Przywara
2016-02-01 18:40 ` Jean-Francois Moine
2016-02-01 23:01 ` André Przywara
2016-02-01 17:39 ` [PATCH 07/11] clk: sunxi: add generic allwinner,sunxi name Andre Przywara
2016-02-08 15:57 ` Rob Herring
2016-02-08 16:06 ` Andre Przywara
2016-02-01 17:39 ` [PATCH 08/11] clk: sunxi: improve error reporting for the mux clock Andre Przywara
2016-02-02 18:02 ` Maxime Ripard
2016-02-02 18:05 ` Andre Przywara
2016-02-01 17:39 ` Andre Przywara [this message]
2016-02-01 17:39 ` [PATCH 10/11] arm64: dts: add Allwinner A64 SoC .dtsi Andre Przywara
2016-02-01 19:05 ` [linux-sunxi] " Karsten Merker
2016-02-01 23:03 ` André Przywara
2016-02-02 16:24 ` Jens Kuske
2016-02-02 16:46 ` Andre Przywara
2016-02-02 17:40 ` Jens Kuske
2016-02-05 8:55 ` Chen-Yu Tsai
2016-02-05 8:50 ` Maxime Ripard
2016-02-08 9:42 ` Andre Przywara
2016-02-23 18:45 ` Maxime Ripard
2016-02-01 17:39 ` [PATCH 11/11] arm64: dts: add Pine64 support Andre Przywara
2016-02-01 19:22 ` [linux-sunxi] " Karsten Merker
2016-02-01 23:04 ` André Przywara
2016-02-05 9:03 ` Maxime Ripard
2016-02-05 10:04 ` Andre Przywara
2016-02-08 0:55 ` [linux-sunxi] " Julian Calaby
2016-02-09 20:33 ` Danny Milosavljevic
2016-02-11 10:32 ` Maxime Ripard
2016-02-02 7:57 ` [PATCH 00/11] arm64: Introduce Allwinner A64 and " lists.nick.betteridge
2016-02-02 8:12 ` André Przywara
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