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MIPS: BCM63XX: split out swpkt_sar/usb clocks 

Make the secondary switch clocks their own clocks. This allows proper
enable reference counting between SAR/XTM and the main switch clocks,
and controlling them individually from drivers.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17332/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
hifive-unleashed-5.1
Jonas Gorski 2017-09-20 13:14:08 +02:00 committed by James Hogan
parent ef42351595
commit 072916f55d
1 changed files with 51 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
arch/mips/bcm63xx/clk.c
View File

@ -121,22 +121,57 @@ static struct clk clk_ephy = {
.set = ephy_set,
};
/*
* Ethernet switch SAR clock
*/
static void swpkt_sar_set(struct clk *clk, int enable)
{
if (BCMCPU_IS_6368())
bcm_hwclock_set(CKCTL_6368_SWPKT_SAR_EN, enable);
else
return;
}
static struct clk clk_swpkt_sar = {
.set = swpkt_sar_set,
};
/*
* Ethernet switch USB clock
*/
static void swpkt_usb_set(struct clk *clk, int enable)
{
if (BCMCPU_IS_6368())
bcm_hwclock_set(CKCTL_6368_SWPKT_USB_EN, enable);
else
return;
}
static struct clk clk_swpkt_usb = {
.set = swpkt_usb_set,
};
/*
* Ethernet switch clock
*/
static void enetsw_set(struct clk *clk, int enable)
{
if (BCMCPU_IS_6328())
if (BCMCPU_IS_6328()) {
bcm_hwclock_set(CKCTL_6328_ROBOSW_EN, enable);
else if (BCMCPU_IS_6362())
} else if (BCMCPU_IS_6362()) {
bcm_hwclock_set(CKCTL_6362_ROBOSW_EN, enable);
else if (BCMCPU_IS_6368())
bcm_hwclock_set(CKCTL_6368_ROBOSW_EN |
CKCTL_6368_SWPKT_USB_EN |
CKCTL_6368_SWPKT_SAR_EN,
enable);
else
} else if (BCMCPU_IS_6368()) {
if (enable) {
clk_enable_unlocked(&clk_swpkt_sar);
clk_enable_unlocked(&clk_swpkt_usb);
} else {
clk_disable_unlocked(&clk_swpkt_usb);
clk_disable_unlocked(&clk_swpkt_sar);
}
bcm_hwclock_set(CKCTL_6368_ROBOSW_EN, enable);
} else {
return;
}
if (enable) {
/* reset switch core afer clock change */
@ -261,8 +296,12 @@ static void xtm_set(struct clk *clk, int enable)
if (!BCMCPU_IS_6368())
return;
bcm_hwclock_set(CKCTL_6368_SAR_EN |
CKCTL_6368_SWPKT_SAR_EN, enable);
if (enable)
clk_enable_unlocked(&clk_swpkt_sar);
else
clk_disable_unlocked(&clk_swpkt_sar);
bcm_hwclock_set(CKCTL_6368_SAR_EN, enable);
if (enable) {
/* reset sar core afer clock change */
@ -451,6 +490,8 @@ static struct clk_lookup bcm6358_clks[] = {
CLKDEV_INIT(NULL, "usbd", &clk_usbd),
CLKDEV_INIT(NULL, "spi", &clk_spi),
CLKDEV_INIT(NULL, "pcm", &clk_pcm),
CLKDEV_INIT(NULL, "swpkt_sar", &clk_swpkt_sar),
CLKDEV_INIT(NULL, "swpkt_usb", &clk_swpkt_usb),
CLKDEV_INIT("bcm63xx_enet.0", "enet", &clk_enet0),
CLKDEV_INIT("bcm63xx_enet.1", "enet", &clk_enet1),
};