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From: Eric Anholt <eric@anholt.net>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-rpi-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Stephen Warren <swarren@wwwdotorg.org>,
	Lee Jones <lee@kernel.org>,
	devicetree@vger.kernel.org, Eric Anholt <eric@anholt.net>
Subject: [PATCH 7/7] ARM: bcm2835: Tie SPI clock to the core clock rate.
Date: Mon, 18 May 2015 12:43:39 -0700	[thread overview]
Message-ID: <1431978219-14226-8-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1431978219-14226-1-git-send-email-eric@anholt.net>

We were previously using a fixed clock declared in the 2835 DT, but
it's actually the core clock, and it might not be the same if you had
adjusted it using the firmware's config.txt.

Signed-off-by: Eric Anholt <eric@anholt.net>
---

This is the only patch in the series I haven't really tested, since I
don't have any SPI devices.

 arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index 53285a3..994c8e7 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -69,3 +69,7 @@
 		 <&firmware_clocks RPI_CLOCK_CORE>;
 	clock-names = "uartclk", "apb_pclk";
 };
+
+&spi {
+	clocks = <&firmware_clocks RPI_CLOCK_CORE>;
+};
-- 
2.1.4

      parent reply	other threads:[~2015-05-18 19:43 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-18 19:43 Raspberry Pi DT clocks series Eric Anholt
2015-05-18 19:43 ` [PATCH 1/7] dt/bindings: Add binding for the Raspberry Pi clock provider Eric Anholt
2015-05-28 21:46   ` Stephen Warren
2015-05-18 19:43 ` [PATCH 2/7] ARM: bcm2835: Add a Raspberry Pi-specific clock driver Eric Anholt
2015-05-19  3:05   ` Baruch Siach
2015-05-28 19:02     ` [PATCH 2/7 v2] " Eric Anholt
2015-05-28 22:02   ` [PATCH 2/7] " Stephen Warren
     [not found]     ` <55679085.6040402-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-05-28 22:48       ` Stephen Boyd
     [not found]         ` <20150528224828.GI24204-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-05-29 19:30           ` Eric Anholt
2015-05-29 21:02       ` Eric Anholt
     [not found]         ` <87h9qvcd1i.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-06-05  2:56           ` Stephen Warren
2015-05-29 19:09     ` Eric Anholt
2015-05-18 19:43 ` [PATCH 4/7] ARM: bcm2835: Drop never-used clock-frequency property of uart0 Eric Anholt
     [not found] ` <1431978219-14226-1-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-05-18 19:43   ` [PATCH 3/7] ARM: bcm2835: Add DT for the firmware clocks driver Eric Anholt
2015-05-18 19:43   ` [PATCH 5/7] ARM: bcm2835: Drop the fixed sys_pclk Eric Anholt
     [not found]     ` <1431978219-14226-6-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-05-28 22:05       ` Stephen Warren
     [not found]         ` <55679125.6000607-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-05-29 17:44           ` Eric Anholt
2015-05-18 19:43   ` [PATCH 6/7] ARM: bcm2835: Use the RPi firmware clocks for uart Eric Anholt
2015-05-18 19:43 ` Eric Anholt [this message]

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