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| author | Andrew Lunn | 2011-12-15 08:15:07 +0100 |
|---|---|---|
| committer | Mike Turquette | 2012-05-09 01:33:39 +0200 |
| commit | 2f129bf4aab684bef1e82e747b709a5025ecb698 (patch) | |
| tree | 4be6e04fc306cfad25b3b86f831cd4d462c10f44 /arch/arm/mach-kirkwood/common.c | |
| parent | clk: add a fixed factor clock (diff) | |
| download | kernel-qcow2-linux-2f129bf4aab684bef1e82e747b709a5025ecb698.tar.gz kernel-qcow2-linux-2f129bf4aab684bef1e82e747b709a5025ecb698.tar.xz kernel-qcow2-linux-2f129bf4aab684bef1e82e747b709a5025ecb698.zip | |
ARM: Orion: Add clocks using the generic clk infrastructure.
Add tclk as a fixed rate clock for all platforms. In addition, on
kirkwood, add a gated clock for most of the clocks which can be gated.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
[mturquette@linaro.org: removed redundant CLKDEV_LOOKUP from Kconfig]
[mturquette@linaro.org: removed redundant clk.h from mach-dove/common.c]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'arch/arm/mach-kirkwood/common.c')
| -rw-r--r-- | arch/arm/mach-kirkwood/common.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index a02cae881f2f..57b8d1ef3093 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -15,6 +15,8 @@ #include <linux/ata_platform.h> #include <linux/mtd/nand.h> #include <linux/dma-mapping.h> +#include <linux/clk-provider.h> +#include <linux/spinlock.h> #include <net/dsa.h> #include <asm/page.h> #include <asm/timex.h> @@ -31,6 +33,7 @@ #include <plat/common.h> #include <plat/time.h> #include <plat/addr-map.h> +#include <plat/mv_xor.h> #include "common.h" /***************************************************************************** @@ -69,6 +72,41 @@ unsigned int kirkwood_clk_ctrl = CGC_DUNIT | CGC_RESERVED; /***************************************************************************** + * CLK tree + ****************************************************************************/ +static DEFINE_SPINLOCK(gating_lock); +static struct clk *tclk; + +static struct clk __init *kirkwood_register_gate(const char *name, u8 bit_idx) +{ + return clk_register_gate(NULL, name, "tclk", CLK_IGNORE_UNUSED, + (void __iomem *)CLOCK_GATING_CTRL, + bit_idx, 0, &gating_lock); +} + +void __init kirkwood_clk_init(void) +{ + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, + CLK_IS_ROOT, kirkwood_tclk); + + kirkwood_register_gate("runit", CGC_BIT_RUNIT); + kirkwood_register_gate("ge0", CGC_BIT_GE0); + kirkwood_register_gate("ge1", CGC_BIT_GE1); + kirkwood_register_gate("sata0", CGC_BIT_SATA0); + kirkwood_register_gate("sata1", CGC_BIT_SATA1); + kirkwood_register_gate("usb0", CGC_BIT_USB0); + kirkwood_register_gate("sdio", CGC_BIT_SDIO); + kirkwood_register_gate("crypto", CGC_BIT_CRYPTO); + kirkwood_register_gate("xor0", CGC_BIT_XOR0); + kirkwood_register_gate("xor1", CGC_BIT_XOR1); + kirkwood_register_gate("pex0", CGC_BIT_PEX0); + kirkwood_register_gate("pex1", CGC_BIT_PEX1); + kirkwood_register_gate("audio", CGC_BIT_AUDIO); + kirkwood_register_gate("tdm", CGC_BIT_TDM); + kirkwood_register_gate("tsu", CGC_BIT_TSU); +} + +/***************************************************************************** * EHCI0 ****************************************************************************/ void __init kirkwood_ehci_init(void) @@ -465,6 +503,9 @@ void __init kirkwood_init(void) kirkwood_l2_init(); #endif + /* Setup root of clk tree */ + kirkwood_clk_init(); + /* internal devices that every board has */ kirkwood_rtc_init(); kirkwood_wdt_init(); |