diff options
| author | Konstantin Porotchkin <kostap@marvell.com> | 2017-04-05 18:22:31 +0300 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2017-05-09 13:38:18 +0200 |
| commit | a2cb55938fd9bd00dddcd0991d67fd1dd9e05ad5 (patch) | |
| tree | 86144e7512f570e839400d008357a497a321d14f /arch | |
| parent | f4f194e864e879896e630594448b31cc672a4934 (diff) | |
arm64: mvebu: a8k: Add support for NAND clock get
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>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mvebu/armada8k/cpu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/armada8k/cpu.c b/arch/arm/mach-mvebu/armada8k/cpu.c index 2325e9a180..38e7d33cb3 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; +} |