linux-kernel - [PATCH v2 05/10] clk: bcm: Add Broadcom Hurricane 2 clock support

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Date:   Thu, 28 Sep 2017 16:14:57 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM IPROC ARM
        ARCHITECTURE), Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list),
        linux-clk@...r.kernel.org (open list:COMMON CLK FRAMEWORK)
Subject: [PATCH v2 05/10] clk: bcm: Add Broadcom Hurricane 2 clock support

Add support for the Broadcom Hurricane 2 SoC clock controller. We can
re-use the existing iProc clock library since the SoC's architecture is
largely the same as its predecessors. For now, we just initialize the
iProc ARM PLL.

Acked-by: Jon Mason <jon.mason@...adcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/clk/bcm/Kconfig   |  9 +++++++++
 drivers/clk/bcm/Makefile  |  1 +
 drivers/clk/bcm/clk-hr2.c | 27 +++++++++++++++++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 drivers/clk/bcm/clk-hr2.c

diff --git a/drivers/clk/bcm/Kconfig b/drivers/clk/bcm/Kconfig
index 1d9187df167b..4c4bd85f707c 100644
--- a/drivers/clk/bcm/Kconfig
+++ b/drivers/clk/bcm/Kconfig
@@ -30,6 +30,15 @@ config CLK_BCM_CYGNUS
 	help
 	  Enable common clock framework support for the Broadcom Cygnus SoC
 
+config CLK_BCM_HR2
+	bool "Broadcom Hurricane 2 clock support"
+	depends on ARCH_BCM_HR2 || COMPILE_TEST
+	select COMMON_CLK_IPROC
+	default ARCH_BCM_HR2
+	help
+	  Enable common clock framework support for the Broadcom Hurricane 2
+	  SoC
+
 config CLK_BCM_NSP
 	bool "Broadcom Northstar/Northstar Plus clock support"
 	depends on ARCH_BCM_5301X || ARCH_BCM_NSP || COMPILE_TEST
diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile
index a0c14fa4aa1e..755144195541 100644
--- a/drivers/clk/bcm/Makefile
+++ b/drivers/clk/bcm/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_ARCH_BCM2835)	+= clk-bcm2835.o
 obj-$(CONFIG_ARCH_BCM2835)	+= clk-bcm2835-aux.o
 obj-$(CONFIG_ARCH_BCM_53573)	+= clk-bcm53573-ilp.o
 obj-$(CONFIG_CLK_BCM_CYGNUS)	+= clk-cygnus.o
+obj-$(CONFIG_CLK_BCM_HR2)	+= clk-hr2.o
 obj-$(CONFIG_CLK_BCM_NSP)	+= clk-nsp.o
 obj-$(CONFIG_CLK_BCM_NS2)	+= clk-ns2.o
 obj-$(CONFIG_CLK_BCM_SR)	+= clk-sr.o
diff --git a/drivers/clk/bcm/clk-hr2.c b/drivers/clk/bcm/clk-hr2.c
new file mode 100644
index 000000000000..f7c5b7379475
--- /dev/null
+++ b/drivers/clk/bcm/clk-hr2.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2017 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "clk-iproc.h"
+
+static void __init hr2_armpll_init(struct device_node *node)
+{
+	iproc_armpll_setup(node);
+}
+CLK_OF_DECLARE(hr2_armpll, "brcm,hr2-armpll", hr2_armpll_init);
-- 
2.14.1