Add default configuration for NAND, to be enabled in your board config. Ensure
clock gating is set appropriately when the NAND is enabled.
Acked-by: Jason Cooper <ja...@lakedaemon.net>
Signed-off-by: Jamie Lentin <j...@lentin.co.uk>
---
arch/arm/boot/dts/kirkwood.dtsi | 15 ++++++++++++++-
arch/arm/mach-kirkwood/common.c | 12 ++++++++++++
2 files changed, 26 insertions(+), 1 deletions(-)
diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
index 3474ef8..926528b 100644
--- a/arch/arm/boot/dts/kirkwood.dtsi
+++ b/arch/arm/boot/dts/kirkwood.dtsi
@@ -5,7 +5,7 @@
ocp@f1000000 {
compatible = "simple-bus";
- ranges = <0 0xf1000000 0x1000000>;
+ ranges = <0 0xf1000000 0x4000000>;
#address-cells = <1>;
#size-cells = <1>;
@@ -32,5 +32,18 @@
reg = <0x10300 0x20>;
interrupts = <53>;
};
+
+ nand@3000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ cle = <0>;
+ ale = <1>;
+ bank-width = <1>;
+ compatible = "mrvl,orion-nand";
+ reg = <0x3000000 0x400>;
+ chip-delay = <25>;
+ /* set partition map and/or chip-delay in board dts */
+ status = "disabled";
+ };
};
};
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index a02cae8..3ad0373 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -15,6 +15,7 @@
#include <linux/ata_platform.h>
#include <linux/mtd/nand.h>
#include <linux/dma-mapping.h>
+#include <linux/of.h>
#include <net/dsa.h>
#include <asm/page.h>
#include <asm/timex.h>
@@ -482,6 +483,9 @@ static int __init kirkwood_clock_gate(void)
unsigned int curr = readl(CLOCK_GATING_CTRL);
u32 dev, rev;
+#ifdef CONFIG_OF
+ struct device_node *np;
+#endif
kirkwood_pcie_id(&dev, &rev);
printk(KERN_DEBUG "Gating clock of unused units\n");
printk(KERN_DEBUG "before: 0x%08x\n", curr);
@@ -489,6 +493,14 @@ static int __init kirkwood_clock_gate(void)
/* Make sure those units are accessible */
writel(curr | CGC_SATA0 | CGC_SATA1 | CGC_PEX0 | CGC_PEX1,
CLOCK_GATING_CTRL);
+#ifdef CONFIG_OF
+ np = of_find_compatible_node(NULL, NULL, "mrvl,orion-nand");
+ if (np && of_device_is_available(np)) {
+ kirkwood_clk_ctrl |= CGC_RUNIT;
+ of_node_put(np);
+ }
+#endif
+
/* For SATA: first shutdown the phy */
if (!(kirkwood_clk_ctrl & CGC_SATA0)) {
/* Disable PLL and IVREF */
--
1.7.9.1
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