MIPS: BCM63XX: Add support for bcm6368 CPU.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2892/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/bcm63xx/Kconfig b/arch/mips/bcm63xx/Kconfig
index fb177d6..6b1b9ad 100644
--- a/arch/mips/bcm63xx/Kconfig
+++ b/arch/mips/bcm63xx/Kconfig
@@ -20,6 +20,10 @@
config BCM63XX_CPU_6358
bool "support 6358 CPU"
select HW_HAS_PCI
+
+config BCM63XX_CPU_6368
+ bool "support 6368 CPU"
+ select HW_HAS_PCI
endmenu
source "arch/mips/bcm63xx/boards/Kconfig"
diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c
index 2c68ee9..9d57c71 100644
--- a/arch/mips/bcm63xx/clk.c
+++ b/arch/mips/bcm63xx/clk.c
@@ -10,6 +10,7 @@
#include <linux/mutex.h>
#include <linux/err.h>
#include <linux/clk.h>
+#include <linux/delay.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
@@ -113,6 +114,34 @@
};
/*
+ * Ethernet switch clock
+ */
+static void enetsw_set(struct clk *clk, int enable)
+{
+ if (!BCMCPU_IS_6368())
+ return;
+ bcm_hwclock_set(CKCTL_6368_ROBOSW_CLK_EN |
+ CKCTL_6368_SWPKT_USB_EN |
+ CKCTL_6368_SWPKT_SAR_EN, enable);
+ if (enable) {
+ u32 val;
+
+ /* reset switch core afer clock change */
+ val = bcm_perf_readl(PERF_SOFTRESET_6368_REG);
+ val &= ~SOFTRESET_6368_ENETSW_MASK;
+ bcm_perf_writel(val, PERF_SOFTRESET_6368_REG);
+ msleep(10);
+ val |= SOFTRESET_6368_ENETSW_MASK;
+ bcm_perf_writel(val, PERF_SOFTRESET_6368_REG);
+ msleep(10);
+ }
+}
+
+static struct clk clk_enetsw = {
+ .set = enetsw_set,
+};
+
+/*
* PCM clock
*/
static void pcm_set(struct clk *clk, int enable)
@@ -131,9 +160,10 @@
*/
static void usbh_set(struct clk *clk, int enable)
{
- if (!BCMCPU_IS_6348())
- return;
- bcm_hwclock_set(CKCTL_6348_USBH_EN, enable);
+ if (BCMCPU_IS_6348())
+ bcm_hwclock_set(CKCTL_6348_USBH_EN, enable);
+ else if (BCMCPU_IS_6368())
+ bcm_hwclock_set(CKCTL_6368_USBH_CLK_EN, enable);
}
static struct clk clk_usbh = {
@@ -162,6 +192,36 @@
};
/*
+ * XTM clock
+ */
+static void xtm_set(struct clk *clk, int enable)
+{
+ if (!BCMCPU_IS_6368())
+ return;
+
+ bcm_hwclock_set(CKCTL_6368_SAR_CLK_EN |
+ CKCTL_6368_SWPKT_SAR_EN, enable);
+
+ if (enable) {
+ u32 val;
+
+ /* reset sar core afer clock change */
+ val = bcm_perf_readl(PERF_SOFTRESET_6368_REG);
+ val &= ~SOFTRESET_6368_SAR_MASK;
+ bcm_perf_writel(val, PERF_SOFTRESET_6368_REG);
+ mdelay(1);
+ val |= SOFTRESET_6368_SAR_MASK;
+ bcm_perf_writel(val, PERF_SOFTRESET_6368_REG);
+ mdelay(1);
+ }
+}
+
+
+static struct clk clk_xtm = {
+ .set = xtm_set,
+};
+
+/*
* Internal peripheral clock
*/
static struct clk clk_periph = {
@@ -204,12 +264,16 @@
return &clk_enet0;
if (!strcmp(id, "enet1"))
return &clk_enet1;
+ if (!strcmp(id, "enetsw"))
+ return &clk_enetsw;
if (!strcmp(id, "ephy"))
return &clk_ephy;
if (!strcmp(id, "usbh"))
return &clk_usbh;
if (!strcmp(id, "spi"))
return &clk_spi;
+ if (!strcmp(id, "xtm"))
+ return &clk_xtm;
if (!strcmp(id, "periph"))
return &clk_periph;
if (BCMCPU_IS_6358() && !strcmp(id, "pcm"))
diff --git a/arch/mips/bcm63xx/cpu.c b/arch/mips/bcm63xx/cpu.c
index 8bd5133..8094168 100644
--- a/arch/mips/bcm63xx/cpu.c
+++ b/arch/mips/bcm63xx/cpu.c
@@ -63,6 +63,15 @@
};
+static const unsigned long bcm6368_regs_base[] = {
+ __GEN_CPU_REGS_TABLE(6368)
+};
+
+static const int bcm6368_irqs[] = {
+ __GEN_CPU_IRQ_TABLE(6368)
+
+};
+
u16 __bcm63xx_get_cpu_id(void)
{
return bcm63xx_cpu_id;
@@ -89,20 +98,19 @@
static unsigned int detect_cpu_clock(void)
{
- unsigned int tmp, n1 = 0, n2 = 0, m1 = 0;
-
- /* BCM6338 has a fixed 240 Mhz frequency */
- if (BCMCPU_IS_6338())
+ switch (bcm63xx_get_cpu_id()) {
+ case BCM6338_CPU_ID:
+ /* BCM6338 has a fixed 240 Mhz frequency */
return 240000000;
- /* BCM6345 has a fixed 140Mhz frequency */
- if (BCMCPU_IS_6345())
+ case BCM6345_CPU_ID:
+ /* BCM6345 has a fixed 140Mhz frequency */
return 140000000;
- /*
- * frequency depends on PLL configuration:
- */
- if (BCMCPU_IS_6348()) {
+ case BCM6348_CPU_ID:
+ {
+ unsigned int tmp, n1, n2, m1;
+
/* 16MHz * (N1 + 1) * (N2 + 2) / (M1_CPU + 1) */
tmp = bcm_perf_readl(PERF_MIPSPLLCTL_REG);
n1 = (tmp & MIPSPLLCTL_N1_MASK) >> MIPSPLLCTL_N1_SHIFT;
@@ -111,17 +119,47 @@
n1 += 1;
n2 += 2;
m1 += 1;
+ return (16 * 1000000 * n1 * n2) / m1;
}
- if (BCMCPU_IS_6358()) {
+ case BCM6358_CPU_ID:
+ {
+ unsigned int tmp, n1, n2, m1;
+
/* 16MHz * N1 * N2 / M1_CPU */
tmp = bcm_ddr_readl(DDR_DMIPSPLLCFG_REG);
n1 = (tmp & DMIPSPLLCFG_N1_MASK) >> DMIPSPLLCFG_N1_SHIFT;
n2 = (tmp & DMIPSPLLCFG_N2_MASK) >> DMIPSPLLCFG_N2_SHIFT;
m1 = (tmp & DMIPSPLLCFG_M1_MASK) >> DMIPSPLLCFG_M1_SHIFT;
+ return (16 * 1000000 * n1 * n2) / m1;
}
- return (16 * 1000000 * n1 * n2) / m1;
+ case BCM6368_CPU_ID:
+ {
+ unsigned int tmp, p1, p2, ndiv, m1;
+
+ /* (64MHz / P1) * P2 * NDIV / M1_CPU */
+ tmp = bcm_ddr_readl(DDR_DMIPSPLLCFG_6368_REG);
+
+ p1 = (tmp & DMIPSPLLCFG_6368_P1_MASK) >>
+ DMIPSPLLCFG_6368_P1_SHIFT;
+
+ p2 = (tmp & DMIPSPLLCFG_6368_P2_MASK) >>
+ DMIPSPLLCFG_6368_P2_SHIFT;
+
+ ndiv = (tmp & DMIPSPLLCFG_6368_NDIV_MASK) >>
+ DMIPSPLLCFG_6368_NDIV_SHIFT;
+
+ tmp = bcm_ddr_readl(DDR_DMIPSPLLDIV_6368_REG);
+ m1 = (tmp & DMIPSPLLDIV_6368_MDIV_MASK) >>
+ DMIPSPLLDIV_6368_MDIV_SHIFT;
+
+ return (((64 * 1000000) / p1) * p2 * ndiv) / m1;
+ }
+
+ default:
+ BUG();
+ }
}
/*
@@ -143,7 +181,7 @@
banks = (val & SDRAM_CFG_BANK_MASK) ? 2 : 1;
}
- if (BCMCPU_IS_6358()) {
+ if (BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
val = bcm_memc_readl(MEMC_CFG_REG);
rows = (val & MEMC_CFG_ROW_MASK) >> MEMC_CFG_ROW_SHIFT;
cols = (val & MEMC_CFG_COL_MASK) >> MEMC_CFG_COL_SHIFT;
@@ -188,9 +226,18 @@
bcm63xx_irqs = bcm6345_irqs;
break;
case CPU_BMIPS4350:
- expected_cpu_id = BCM6358_CPU_ID;
- bcm63xx_regs_base = bcm6358_regs_base;
- bcm63xx_irqs = bcm6358_irqs;
+ switch (read_c0_prid() & 0xf0) {
+ case 0x10:
+ expected_cpu_id = BCM6358_CPU_ID;
+ bcm63xx_regs_base = bcm6358_regs_base;
+ bcm63xx_irqs = bcm6358_irqs;
+ break;
+ case 0x30:
+ expected_cpu_id = BCM6368_CPU_ID;
+ bcm63xx_regs_base = bcm6368_regs_base;
+ bcm63xx_irqs = bcm6368_irqs;
+ break;
+ }
break;
}
diff --git a/arch/mips/bcm63xx/dev-uart.c b/arch/mips/bcm63xx/dev-uart.c
index c2963da..d6e42c6 100644
--- a/arch/mips/bcm63xx/dev-uart.c
+++ b/arch/mips/bcm63xx/dev-uart.c
@@ -54,7 +54,7 @@
if (id >= ARRAY_SIZE(bcm63xx_uart_devices))
return -ENODEV;
- if (id == 1 && !BCMCPU_IS_6358())
+ if (id == 1 && (!BCMCPU_IS_6358() && !BCMCPU_IS_6368()))
return -ENODEV;
if (id == 0) {
diff --git a/arch/mips/bcm63xx/irq.c b/arch/mips/bcm63xx/irq.c
index 9f53884..9a216a4 100644
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -71,6 +71,17 @@
#define ext_irq_cfg_reg1 PERF_EXTIRQ_CFG_REG_6358
#define ext_irq_cfg_reg2 0
#endif
+#ifdef CONFIG_BCM63XX_CPU_6368
+#define irq_stat_reg PERF_IRQSTAT_6368_REG
+#define irq_mask_reg PERF_IRQMASK_6368_REG
+#define irq_bits 64
+#define is_ext_irq_cascaded 1
+#define ext_irq_start (BCM_6368_EXT_IRQ0 - IRQ_INTERNAL_BASE)
+#define ext_irq_end (BCM_6368_EXT_IRQ5 - IRQ_INTERNAL_BASE)
+#define ext_irq_count 6
+#define ext_irq_cfg_reg1 PERF_EXTIRQ_CFG_REG_6368
+#define ext_irq_cfg_reg2 PERF_EXTIRQ_CFG_REG2_6368
+#endif
#if irq_bits == 32
#define dispatch_internal __dispatch_internal
@@ -134,6 +145,17 @@
ext_irq_end = BCM_6358_EXT_IRQ3 - IRQ_INTERNAL_BASE;
ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6358;
break;
+ case BCM6368_CPU_ID:
+ irq_stat_addr += PERF_IRQSTAT_6368_REG;
+ irq_mask_addr += PERF_IRQMASK_6368_REG;
+ irq_bits = 64;
+ ext_irq_count = 6;
+ is_ext_irq_cascaded = 1;
+ ext_irq_start = BCM_6368_EXT_IRQ0 - IRQ_INTERNAL_BASE;
+ ext_irq_end = BCM_6368_EXT_IRQ5 - IRQ_INTERNAL_BASE;
+ ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6368;
+ ext_irq_cfg_reg2 = PERF_EXTIRQ_CFG_REG2_6368;
+ break;
default:
BUG();
}
@@ -406,7 +428,7 @@
reg &= ~EXTIRQ_CFG_BOTHEDGE_6348(irq);
}
- if (BCMCPU_IS_6338() || BCMCPU_IS_6358()) {
+ if (BCMCPU_IS_6338() || BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
if (levelsense)
reg |= EXTIRQ_CFG_LEVELSENSE(irq);
else
diff --git a/arch/mips/bcm63xx/prom.c b/arch/mips/bcm63xx/prom.c
index be252ef..99d7f40 100644
--- a/arch/mips/bcm63xx/prom.c
+++ b/arch/mips/bcm63xx/prom.c
@@ -32,9 +32,12 @@
mask = CKCTL_6345_ALL_SAFE_EN;
else if (BCMCPU_IS_6348())
mask = CKCTL_6348_ALL_SAFE_EN;
- else
- /* BCMCPU_IS_6358() */
+ else if (BCMCPU_IS_6358())
mask = CKCTL_6358_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6368())
+ mask = CKCTL_6368_ALL_SAFE_EN;
+ else
+ mask = 0;
reg = bcm_perf_readl(PERF_CKCTL_REG);
reg &= ~mask;