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* [U-Boot] [PATCH v2 2/5] arm64: mvebu: a8k: Add support for NAND clock get
@ 2017-04-05 15:22 kostap at marvell.com
  2017-04-05 15:22 ` [U-Boot] [PATCH v2 4/5] arm64: a8k: dts: Add support for NAND devices on A8K platform kostap at marvell.com
                   ` (3 more replies)
  0 siblings, 4 replies; 9+ messages in thread
From: kostap at marvell.com @ 2017-04-05 15:22 UTC (permalink / raw)
  To: u-boot

From: Konstantin Porotchkin <kostap@marvell.com>

Implement mvebu_get_nand_clock call for A8K family.
This function is used by PXA3XX NAND driver.

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Igal Liberman <igall@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
---
Changes from v1:
- Add TODO notice for moving the functionality to a future clock driver

 arch/arm/mach-mvebu/armada8k/cpu.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/mach-mvebu/armada8k/cpu.c b/arch/arm/mach-mvebu/armada8k/cpu.c
index 2325e9a..38e7d33 100644
--- a/arch/arm/mach-mvebu/armada8k/cpu.c
+++ b/arch/arm/mach-mvebu/armada8k/cpu.c
@@ -110,3 +110,21 @@ void reset_cpu(ulong ignored)
 	reg &= ~(1 << RFU_SW_RESET_OFFSET);
 	writel(reg, RFU_GLOBAL_SW_RST);
 }
+
+/*
+ * TODO - implement this functionality using platform
+ *        clock driver once it gets available
+ * Return NAND clock in Hz
+ */
+u32 mvebu_get_nand_clock(void)
+{
+	unsigned long NAND_FLASH_CLK_CTRL = 0xF2440700UL;
+	unsigned long NF_CLOCK_SEL_MASK = 0x1;
+	u32 reg;
+
+	reg = readl(NAND_FLASH_CLK_CTRL);
+	if (reg & NF_CLOCK_SEL_MASK)
+		return 400 * 1000000;
+	else
+		return 250 * 1000000;
+}
-- 
2.7.4

^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2017-05-09 14:40 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-04-05 15:22 [U-Boot] [PATCH v2 2/5] arm64: mvebu: a8k: Add support for NAND clock get kostap at marvell.com
2017-04-05 15:22 ` [U-Boot] [PATCH v2 4/5] arm64: a8k: dts: Add support for NAND devices on A8K platform kostap at marvell.com
2017-05-08  9:59   ` Stefan Roese
2017-05-09 14:40   ` Stefan Roese
2017-04-05 15:22 ` [U-Boot] [PATCH v2 5/5] arm64: mvebu: a8k: Add NAND configuration parameters kostap at marvell.com
2017-05-08 10:00   ` Stefan Roese
2017-05-09 14:40   ` Stefan Roese
2017-05-08  9:59 ` [U-Boot] [PATCH v2 2/5] arm64: mvebu: a8k: Add support for NAND clock get Stefan Roese
2017-05-09 14:39 ` Stefan Roese

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