ARM: dove: add clock gating control
This patch adds clock gates from the clock gating control register
available on dove. All clock gates are hooked up to tclk, except for
gigabit ethernet controller (ge) which is a child of gephy to allow
both enabled/disabled at the same time.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c
index 8629e30..38e2cc3 100644
--- a/arch/arm/mach-dove/common.c
+++ b/arch/arm/mach-dove/common.c
@@ -24,6 +24,7 @@
#include <asm/mach/time.h>
#include <asm/mach/pci.h>
#include <mach/dove.h>
+#include <mach/pm.h>
#include <mach/bridge-regs.h>
#include <asm/mach/arch.h>
#include <linux/irq.h>
@@ -69,14 +70,68 @@
* CLK tree
****************************************************************************/
static int dove_tclk;
+
+static DEFINE_SPINLOCK(gating_lock);
static struct clk *tclk;
+static struct clk __init *dove_register_gate(const char *name,
+ const char *parent, u8 bit_idx)
+{
+ return clk_register_gate(NULL, name, parent, 0,
+ (void __iomem *)CLOCK_GATING_CONTROL,
+ bit_idx, 0, &gating_lock);
+}
+
static void __init dove_clk_init(void)
{
+ struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1;
+ struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma;
+ struct clk *xor0, *xor1, *ge, *gephy;
+
tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
dove_tclk);
- orion_clkdev_init(tclk);
+ usb0 = dove_register_gate("usb0", "tclk", CLOCK_GATING_BIT_USB0);
+ usb1 = dove_register_gate("usb1", "tclk", CLOCK_GATING_BIT_USB1);
+ sata = dove_register_gate("sata", "tclk", CLOCK_GATING_BIT_SATA);
+ pex0 = dove_register_gate("pex0", "tclk", CLOCK_GATING_BIT_PCIE0);
+ pex1 = dove_register_gate("pex1", "tclk", CLOCK_GATING_BIT_PCIE1);
+ sdio0 = dove_register_gate("sdio0", "tclk", CLOCK_GATING_BIT_SDIO0);
+ sdio1 = dove_register_gate("sdio1", "tclk", CLOCK_GATING_BIT_SDIO1);
+ nand = dove_register_gate("nand", "tclk", CLOCK_GATING_BIT_NAND);
+ camera = dove_register_gate("camera", "tclk", CLOCK_GATING_BIT_CAMERA);
+ i2s0 = dove_register_gate("i2s0", "tclk", CLOCK_GATING_BIT_I2S0);
+ i2s1 = dove_register_gate("i2s1", "tclk", CLOCK_GATING_BIT_I2S1);
+ crypto = dove_register_gate("crypto", "tclk", CLOCK_GATING_BIT_CRYPTO);
+ ac97 = dove_register_gate("ac97", "tclk", CLOCK_GATING_BIT_AC97);
+ pdma = dove_register_gate("pdma", "tclk", CLOCK_GATING_BIT_PDMA);
+ xor0 = dove_register_gate("xor0", "tclk", CLOCK_GATING_BIT_XOR0);
+ xor1 = dove_register_gate("xor1", "tclk", CLOCK_GATING_BIT_XOR1);
+ gephy = dove_register_gate("gephy", "tclk", CLOCK_GATING_BIT_GIGA_PHY);
+ ge = dove_register_gate("ge", "gephy", CLOCK_GATING_BIT_GBE);
+
+ orion_clkdev_add(NULL, "orion_spi.0", tclk);
+ orion_clkdev_add(NULL, "orion_spi.1", tclk);
+ orion_clkdev_add(NULL, "orion_wdt", tclk);
+ orion_clkdev_add(NULL, "mv64xxx_i2c.0", tclk);
+
+ orion_clkdev_add(NULL, "orion-ehci.0", usb0);
+ orion_clkdev_add(NULL, "orion-ehci.1", usb1);
+ orion_clkdev_add(NULL, "mv643xx_eth.0", ge);
+ orion_clkdev_add("0", "sata_mv.0", sata);
+ orion_clkdev_add("0", "pcie", pex0);
+ orion_clkdev_add("1", "pcie", pex1);
+ orion_clkdev_add(NULL, "sdhci-dove.0", sdio0);
+ orion_clkdev_add(NULL, "sdhci-dove.1", sdio1);
+ orion_clkdev_add(NULL, "orion_nand", nand);
+ orion_clkdev_add(NULL, "cafe1000-ccic.0", camera);
+ orion_clkdev_add(NULL, "kirkwood-i2s.0", i2s0);
+ orion_clkdev_add(NULL, "kirkwood-i2s.1", i2s1);
+ orion_clkdev_add(NULL, "mv_crypto", crypto);
+ orion_clkdev_add(NULL, "dove-ac97", ac97);
+ orion_clkdev_add(NULL, "dove-pdma", pdma);
+ orion_clkdev_add(NULL, "mv_xor_shared.0", xor0);
+ orion_clkdev_add(NULL, "mv_xor_shared.1", xor1);
}
/*****************************************************************************