110 lines
3.7 KiB
Diff
110 lines
3.7 KiB
Diff
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From 070469397154c87b14fab48d2fc231ba83007c1b Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Date: Wed, 5 Jun 2013 09:04:59 +0200
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Subject: [PATCH 029/203] arm: mvebu: don't hardcode the physical address for
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mvebu-mbus
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Since the mvebu-mbus driver doesn't yet have a DT binding (and this DT
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binding may not necessarily be ready for 3.11), the physical address
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of the mvebu-mbus registers are currently hardcoded. This doesn't play
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well with the fact that the internal registers base address may be
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different depending on the bootloader.
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In order to have only one central place for the physical address of
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the internal registers, we now use of_translate_address() to translate
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the mvebu-mbus register offsets into the real physical address, by
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using DT-based address translation. This will go away once the
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mvebu-mbus driver gains a proper DT binding.
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Acked-by: Arnd Bergmann <arnd@arndb.de>
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Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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---
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arch/arm/mach-mvebu/armada-370-xp.c | 38 ++++++++++++++++++++++++++-----------
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arch/arm/mach-mvebu/armada-370-xp.h | 8 --------
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2 files changed, 27 insertions(+), 19 deletions(-)
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--- a/arch/arm/mach-mvebu/armada-370-xp.c
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+++ b/arch/arm/mach-mvebu/armada-370-xp.c
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@@ -14,6 +14,7 @@
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#include <linux/kernel.h>
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#include <linux/init.h>
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+#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/io.h>
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#include <linux/time-armada-370-xp.h>
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@@ -34,29 +35,44 @@ static void __init armada_370_xp_map_io(
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debug_ll_io_init();
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}
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-static void __init armada_370_xp_timer_and_clk_init(void)
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+/*
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+ * This initialization will be replaced by a DT-based
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+ * initialization once the mvebu-mbus driver gains DT support.
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+ */
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+
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+#define ARMADA_370_XP_MBUS_WINS_OFFS 0x20000
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+#define ARMADA_370_XP_MBUS_WINS_SIZE 0x100
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+#define ARMADA_370_XP_SDRAM_WINS_OFFS 0x20180
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+#define ARMADA_370_XP_SDRAM_WINS_SIZE 0x20
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+
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+static void __init armada_370_xp_mbus_init(void)
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{
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char *mbus_soc_name;
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+ struct device_node *dn;
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+ const __be32 mbus_wins_offs = cpu_to_be32(ARMADA_370_XP_MBUS_WINS_OFFS);
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+ const __be32 sdram_wins_offs = cpu_to_be32(ARMADA_370_XP_SDRAM_WINS_OFFS);
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- mvebu_clocks_init();
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- armada_370_xp_timer_init();
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- coherency_init();
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-
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- /*
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- * This initialization will be replaced by a DT-based
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- * initialization once the mvebu-mbus driver gains DT support.
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- */
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if (of_machine_is_compatible("marvell,armada370"))
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mbus_soc_name = "marvell,armada370-mbus";
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else
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mbus_soc_name = "marvell,armadaxp-mbus";
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+ dn = of_find_node_by_name(NULL, "internal-regs");
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+ BUG_ON(!dn);
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+
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mvebu_mbus_init(mbus_soc_name,
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- ARMADA_370_XP_MBUS_WINS_BASE,
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+ of_translate_address(dn, &mbus_wins_offs),
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ARMADA_370_XP_MBUS_WINS_SIZE,
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- ARMADA_370_XP_SDRAM_WINS_BASE,
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+ of_translate_address(dn, &sdram_wins_offs),
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ARMADA_370_XP_SDRAM_WINS_SIZE);
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+}
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+static void __init armada_370_xp_timer_and_clk_init(void)
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+{
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+ mvebu_clocks_init();
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+ armada_370_xp_timer_init();
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+ coherency_init();
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+ armada_370_xp_mbus_init();
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#ifdef CONFIG_CACHE_L2X0
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l2x0_of_init(0, ~0UL);
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#endif
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--- a/arch/arm/mach-mvebu/armada-370-xp.h
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+++ b/arch/arm/mach-mvebu/armada-370-xp.h
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@@ -15,14 +15,6 @@
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#ifndef __MACH_ARMADA_370_XP_H
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#define __MACH_ARMADA_370_XP_H
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-#define ARMADA_370_XP_REGS_PHYS_BASE 0xd0000000
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-
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-/* These defines can go away once mvebu-mbus has a DT binding */
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-#define ARMADA_370_XP_MBUS_WINS_BASE (ARMADA_370_XP_REGS_PHYS_BASE + 0x20000)
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-#define ARMADA_370_XP_MBUS_WINS_SIZE 0x100
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-#define ARMADA_370_XP_SDRAM_WINS_BASE (ARMADA_370_XP_REGS_PHYS_BASE + 0x20180)
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-#define ARMADA_370_XP_SDRAM_WINS_SIZE 0x20
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-
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#ifdef CONFIG_SMP
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#include <linux/cpumask.h>
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