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106 lines
2.8 KiB
106 lines
2.8 KiB
7 years ago
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From b98027285bd1fa95da0645a4234a5fc1f1a83f92 Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jonas.gorski@gmail.com>
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Date: Sun, 26 Feb 2017 11:59:52 +0100
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Subject: [PATCH V2 8/8] MIPS: BCM63XX: split out swpkt_sar/usb clocks
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Make the secondary switch clocks their own clocks. This allows proper
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enable reference counting between SAR/XTM and the main switch clocks,
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and controlling them individually from drivers.
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Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
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---
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arch/mips/bcm63xx/clk.c | 61 +++++++++++++++++++++++++++++++++++++++++--------
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1 file changed, 51 insertions(+), 10 deletions(-)
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--- a/arch/mips/bcm63xx/clk.c
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+++ b/arch/mips/bcm63xx/clk.c
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@@ -122,21 +122,56 @@ static struct clk clk_ephy = {
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};
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/*
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+ * Ethernet switch SAR clock
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+ */
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+static void swpkt_sar_set(struct clk *clk, int enable)
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+{
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+ if (BCMCPU_IS_6368())
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+ bcm_hwclock_set(CKCTL_6368_SWPKT_SAR_EN, enable);
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+ else
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+ return;
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+}
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+
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+static struct clk clk_swpkt_sar = {
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+ .set = swpkt_sar_set,
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+};
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+
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+/*
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+ * Ethernet switch USB clock
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+ */
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+static void swpkt_usb_set(struct clk *clk, int enable)
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+{
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+ if (BCMCPU_IS_6368())
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+ bcm_hwclock_set(CKCTL_6368_SWPKT_USB_EN, enable);
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+ else
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+ return;
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+}
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+
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+static struct clk clk_swpkt_usb = {
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+ .set = swpkt_usb_set,
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+};
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+
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+/*
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* Ethernet switch clock
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*/
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static void enetsw_set(struct clk *clk, int enable)
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{
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- if (BCMCPU_IS_6328())
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+ if (BCMCPU_IS_6328()) {
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bcm_hwclock_set(CKCTL_6328_ROBOSW_EN, enable);
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- else if (BCMCPU_IS_6362())
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+ } else if (BCMCPU_IS_6362()) {
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bcm_hwclock_set(CKCTL_6362_ROBOSW_EN, enable);
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- else if (BCMCPU_IS_6368())
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- bcm_hwclock_set(CKCTL_6368_ROBOSW_EN |
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- CKCTL_6368_SWPKT_USB_EN |
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- CKCTL_6368_SWPKT_SAR_EN,
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- enable);
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- else
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+ } else if (BCMCPU_IS_6368()) {
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+ if (enable) {
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+ clk_enable_unlocked(&clk_swpkt_sar);
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+ clk_enable_unlocked(&clk_swpkt_usb);
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+ } else {
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+ clk_disable_unlocked(&clk_swpkt_usb);
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+ clk_disable_unlocked(&clk_swpkt_sar);
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+ }
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+ bcm_hwclock_set(CKCTL_6368_ROBOSW_EN, enable);
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+ } else {
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return;
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+ }
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if (enable) {
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/* reset switch core afer clock change */
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@@ -261,8 +296,12 @@ static void xtm_set(struct clk *clk, int
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if (!BCMCPU_IS_6368())
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return;
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- bcm_hwclock_set(CKCTL_6368_SAR_EN |
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- CKCTL_6368_SWPKT_SAR_EN, enable);
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+ if (enable)
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+ clk_enable_unlocked(&clk_swpkt_sar);
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+ else
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+ clk_disable_unlocked(&clk_swpkt_sar);
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+
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+ bcm_hwclock_set(CKCTL_6368_SAR_EN, enable);
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if (enable) {
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/* reset sar core afer clock change */
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@@ -451,6 +490,8 @@ static struct clk_lookup bcm6358_clks[]
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CLKDEV_INIT(NULL, "usbd", &clk_usbd),
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CLKDEV_INIT(NULL, "spi", &clk_spi),
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CLKDEV_INIT(NULL, "pcm", &clk_pcm),
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+ CLKDEV_INIT(NULL, "swpkt_sar", &clk_swpkt_sar),
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+ CLKDEV_INIT(NULL, "swpkt_usb", &clk_swpkt_usb),
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CLKDEV_INIT("bcm63xx_enet.0", "enet", &clk_enet0),
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CLKDEV_INIT("bcm63xx_enet.1", "enet", &clk_enet1),
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};
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