- Fix hanging ethernet issue of LS1B v2.0 by adding pbl field in plat data.
(It seems that the MAC controller of LS1B v2.0 can only accept pbl=1)
- Add GMAC1 support and setup MUX in terms of PHY mode.
- Add CPUFreq support.
- Add MUX Register Definitions.
- Add PWM Register Definitions.
- Update clock register bitfields according to the latest spec.
- Update clock related stuff.
Signed-off-by: Kelvin Cheung <keguang.zhang@xxxxxxxxx>
---
arch/mips/Kconfig | 1 +
arch/mips/include/asm/mach-loongson1/cpufreq.h | 23 ++++
arch/mips/include/asm/mach-loongson1/loongson1.h | 8 +-
arch/mips/include/asm/mach-loongson1/platform.h | 10 +-
arch/mips/include/asm/mach-loongson1/regs-clk.h | 23 +++-
arch/mips/include/asm/mach-loongson1/regs-mux.h | 67 +++++++++++
arch/mips/include/asm/mach-loongson1/regs-pwm.h | 29 +++++
arch/mips/loongson1/common/platform.c | 141 ++++++++++++++++++++---
arch/mips/loongson1/ls1b/board.c | 12 +-
9 files changed, 283 insertions(+), 31 deletions(-)
create mode 100644 arch/mips/include/asm/mach-loongson1/cpufreq.h
create mode 100644 arch/mips/include/asm/mach-loongson1/regs-mux.h
create mode 100644 arch/mips/include/asm/mach-loongson1/regs-pwm.h
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index ad6badb..63cc6de 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1574,6 +1574,7 @@ config CPU_LOONGSON1
select CPU_HAS_PREFETCH
select CPU_SUPPORTS_32BIT_KERNEL
select CPU_SUPPORTS_HIGHMEM
+ select CPU_SUPPORTS_CPUFREQ
config CPU_BMIPS32_3300
select SMP_UP if SMP
diff --git a/arch/mips/include/asm/mach-loongson1/cpufreq.h b/arch/mips/include/asm/mach-loongson1/cpufreq.h
new file mode 100644
index 0000000..e7765ce
--- /dev/null
+++ b/arch/mips/include/asm/mach-loongson1/cpufreq.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2014 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
+ *
+ * Loongson 1 CPUFreq platform support.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+
+#ifndef __ASM_MACH_LOONGSON1_CPUFREQ_H
+#define __ASM_MACH_LOONGSON1_CPUFREQ_H
+
+struct plat_ls1x_cpufreq {
+ const char *clk_name; /* CPU clk */
+ const char *osc_clk_name; /* OSC clk */
+ unsigned int max_freq; /* in kHz */
+ unsigned int min_freq; /* in kHz */
+};
+
+#endif /* __ASM_MACH_LOONGSON1_CPUFREQ_H */
diff --git a/arch/mips/include/asm/mach-loongson1/loongson1.h b/arch/mips/include/asm/mach-loongson1/loongson1.h
index 5c437c2..20e0c2b 100644
--- a/arch/mips/include/asm/mach-loongson1/loongson1.h
+++ b/arch/mips/include/asm/mach-loongson1/loongson1.h
@@ -16,6 +16,7 @@
#define DEFAULT_MEMSIZE 256 /* If no memsize provided */
/* Loongson 1 Register Bases */
+#define LS1X_MUX_BASE 0x1fd00420
#define LS1X_INTC_BASE 0x1fd01040
#define LS1X_EHCI_BASE 0x1fe00000
#define LS1X_OHCI_BASE 0x1fe08000
@@ -31,7 +32,10 @@
#define LS1X_I2C0_BASE 0x1fe58000
#define LS1X_I2C1_BASE 0x1fe68000
#define LS1X_I2C2_BASE 0x1fe70000
-#define LS1X_PWM_BASE 0x1fe5c000
+#define LS1X_PWM0_BASE 0x1fe5c000
+#define LS1X_PWM1_BASE 0x1fe5c010
+#define LS1X_PWM2_BASE 0x1fe5c020
+#define LS1X_PWM3_BASE 0x1fe5c030
#define LS1X_WDT_BASE 0x1fe5c060
#define LS1X_RTC_BASE 0x1fe64000
#define LS1X_AC97_BASE 0x1fe74000
@@ -39,6 +43,8 @@
#define LS1X_CLK_BASE 0x1fe78030
#include <regs-clk.h>
+#include <regs-mux.h>
+#include <regs-pwm.h>
#include <regs-wdt.h>
#endif /* __ASM_MACH_LOONGSON1_LOONGSON1_H */
diff --git a/arch/mips/include/asm/mach-loongson1/platform.h b/arch/mips/include/asm/mach-loongson1/platform.h
index 30c13e5..47de55e 100644
--- a/arch/mips/include/asm/mach-loongson1/platform.h
+++ b/arch/mips/include/asm/mach-loongson1/platform.h
@@ -13,10 +13,12 @@
#include <linux/platform_device.h>
-extern struct platform_device ls1x_uart_device;
-extern struct platform_device ls1x_eth0_device;
-extern struct platform_device ls1x_ehci_device;
-extern struct platform_device ls1x_rtc_device;
+extern struct platform_device ls1x_uart_pdev;
+extern struct platform_device ls1x_cpufreq_pdev;
+extern struct platform_device ls1x_eth0_pdev;
+extern struct platform_device ls1x_eth1_pdev;
+extern struct platform_device ls1x_ehci_pdev;
+extern struct platform_device ls1x_rtc_pdev;
extern void __init ls1x_clk_init(void);
extern void __init ls1x_serial_setup(struct platform_device *pdev);
diff --git a/arch/mips/include/asm/mach-loongson1/regs-clk.h b/arch/mips/include/asm/mach-loongson1/regs-clk.h
index fb6a3ff..ee2445b 100644
--- a/arch/mips/include/asm/mach-loongson1/regs-clk.h
+++ b/arch/mips/include/asm/mach-loongson1/regs-clk.h
@@ -20,15 +20,32 @@
/* Clock PLL Divisor Register Bits */
#define DIV_DC_EN (0x1 << 31)
+#define DIV_DC_RST (0x1 << 30)
#define DIV_CPU_EN (0x1 << 25)
+#define DIV_CPU_RST (0x1 << 24)
#define DIV_DDR_EN (0x1 << 19)
+#define DIV_DDR_RST (0x1 << 18)
+#define RST_DC_EN (0x1 << 5)
+#define RST_DC (0x1 << 4)
+#define RST_DDR_EN (0x1 << 3)
+#define RST_DDR (0x1 << 2)
+#define RST_CPU_EN (0x1 << 1)
+#define RST_CPU 0x1
#define DIV_DC_SHIFT 26
#define DIV_CPU_SHIFT 20
#define DIV_DDR_SHIFT 14
-#define DIV_DC_WIDTH 5
-#define DIV_CPU_WIDTH 5
-#define DIV_DDR_WIDTH 5
+#define DIV_DC_WIDTH 4
+#define DIV_CPU_WIDTH 4
+#define DIV_DDR_WIDTH 4
+
+#define BYPASS_DC_SHIFT 12
+#define BYPASS_DDR_SHIFT 10
+#define BYPASS_CPU_SHIFT 8
+
+#define BYPASS_DC_WIDTH 1
+#define BYPASS_DDR_WIDTH 1
+#define BYPASS_CPU_WIDTH 1
#endif /* __ASM_MACH_LOONGSON1_REGS_CLK_H */
diff --git a/arch/mips/include/asm/mach-loongson1/regs-mux.h b/arch/mips/include/asm/mach-loongson1/regs-mux.h
new file mode 100644
index 0000000..fb1e36e
--- /dev/null
+++ b/arch/mips/include/asm/mach-loongson1/regs-mux.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2014 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
+ *
+ * Loongson 1 MUX Register Definitions.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_MACH_LOONGSON1_REGS_MUX_H
+#define __ASM_MACH_LOONGSON1_REGS_MUX_H
+
+#define LS1X_MUX_REG(x) \
+ ((void __iomem *)KSEG1ADDR(LS1X_MUX_BASE + (x)))
+
+#define LS1X_MUX_CTRL0 LS1X_MUX_REG(0x0)
+#define LS1X_MUX_CTRL1 LS1X_MUX_REG(0x4)
+
+/* MUX CTRL0 Register Bits */
+#define UART0_USE_PWM23 (0x1 << 28)
+#define UART0_USE_PWM01 (0x1 << 27)
+#define UART1_USE_LCD0_5_6_11 (0x1 << 26)
+#define I2C2_USE_CAN1 (0x1 << 25)
+#define I2C1_USE_CAN0 (0x1 << 24)
+#define NAND3_USE_UART5 (0x1 << 23)
+#define NAND3_USE_UART4 (0x1 << 22)
+#define NAND3_USE_UART1_DAT (0x1 << 21)
+#define NAND3_USE_UART1_CTS (0x1 << 20)
+#define NAND3_USE_PWM23 (0x1 << 19)
+#define NAND3_USE_PWM01 (0x1 << 18)
+#define NAND2_USE_UART5 (0x1 << 17)
+#define NAND2_USE_UART4 (0x1 << 16)
+#define NAND2_USE_UART1_DAT (0x1 << 15)
+#define NAND2_USE_UART1_CTS (0x1 << 14)
+#define NAND2_USE_PWM23 (0x1 << 13)
+#define NAND2_USE_PWM01 (0x1 << 12)
+#define NAND1_USE_UART5 (0x1 << 11)
+#define NAND1_USE_UART4 (0x1 << 10)
+#define NAND1_USE_UART1_DAT (0x1 << 9)
+#define NAND1_USE_UART1_CTS (0x1 << 8)
+#define NAND1_USE_PWM23 (0x1 << 7)
+#define NAND1_USE_PWM01 (0x1 << 6)
+#define GMAC1_USE_UART1 (0x1 << 4)
+#define GMAC1_USE_UART0 (0x1 << 3)
+#define LCD_USE_UART0_DAT (0x1 << 2)
+#define LCD_USE_UART15 (0x1 << 1)
+#define LCD_USE_UART0 0x1
+
+/* MUX CTRL1 Register Bits */
+#define USB_RESET (0x1 << 31)
+#define SPI1_CS_USE_PWM01 (0x1 << 24)
+#define SPI1_USE_CAN (0x1 << 23)
+#define DISABLE_DDR_CONFSPACE (0x1 << 20)
+#define DDR32TO16EN (0x1 << 16)
+#define GMAC1_SHUT (0x1 << 13)
+#define GMAC0_SHUT (0x1 << 12)
+#define USB_SHUT (0x1 << 11)
+#define UART1_3_USE_CAN1 (0x1 << 5)
+#define UART1_2_USE_CAN0 (0x1 << 4)
+#define GMAC1_USE_TXCLK (0x1 << 3)
+#define GMAC0_USE_TXCLK (0x1 << 2)
+#define GMAC1_USE_PWM23 (0x1 << 1)
+#define GMAC0_USE_PWM01 0x1
+
+#endif /* __ASM_MACH_LOONGSON1_REGS_MUX_H */
diff --git a/arch/mips/include/asm/mach-loongson1/regs-pwm.h b/arch/mips/include/asm/mach-loongson1/regs-pwm.h
new file mode 100644
index 0000000..99f2bcc
--- /dev/null
+++ b/arch/mips/include/asm/mach-loongson1/regs-pwm.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2014 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
+ *
+ * Loongson 1 PWM Register Definitions.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_MACH_LOONGSON1_REGS_PWM_H
+#define __ASM_MACH_LOONGSON1_REGS_PWM_H
+
+/* Loongson 1 PWM Timer Register Definitions */
+#define PWM_CNT 0x0
+#define PWM_HRC 0x4
+#define PWM_LRC 0x8
+#define PWM_CTRL 0xc
+
+/* PWM Control Register Bits */
+#define CNT_RST (0x1 << 7)
+#define INT_SR (0x1 << 6)
+#define INT_EN (0x1 << 5)
+#define PWM_SINGLE (0x1 << 4)
+#define PWM_OE (0x1 << 3)
+#define CNT_EN 0x1
+
+#endif /* __ASM_MACH_LOONGSON1_REGS_PWM_H */
diff --git a/arch/mips/loongson1/common/platform.c b/arch/mips/loongson1/common/platform.c
index fdf8cb5..ddf1d4c 100644
--- a/arch/mips/loongson1/common/platform.c
+++ b/arch/mips/loongson1/common/platform.c
@@ -16,8 +16,10 @@
#include <linux/usb/ehci_pdriver.h>
#include <asm-generic/sizes.h>
+#include <cpufreq.h>
#include <loongson1.h>
+/* 8250/16550 compatible UART */
#define LS1X_UART(_id) \
{ \
.mapbase = LS1X_UART ## _id ## _BASE, \
@@ -27,7 +29,7 @@
.type = PORT_16550A, \
}
-static struct plat_serial8250_port ls1x_serial8250_port[] = {
+static struct plat_serial8250_port ls1x_serial8250_pdata[] = {
LS1X_UART(0),
LS1X_UART(1),
LS1X_UART(2),
@@ -35,11 +37,11 @@ static struct plat_serial8250_port ls1x_serial8250_port[] = {
{},
};
-struct platform_device ls1x_uart_device = {
+struct platform_device ls1x_uart_pdev = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
- .platform_data = ls1x_serial8250_port,
+ .platform_data = ls1x_serial8250_pdata,
},
};
@@ -48,16 +50,97 @@ void __init ls1x_serial_setup(struct platform_device *pdev)
struct clk *clk;
struct plat_serial8250_port *p;
- clk = clk_get(NULL, pdev->name);
- if (IS_ERR(clk))
- panic("unable to get %s clock, err=%ld",
- pdev->name, PTR_ERR(clk));
+ clk = clk_get(&pdev->dev, pdev->name);
+ if (IS_ERR(clk)) {
+ pr_err("unable to get %s clock, err=%ld",
+ pdev->name, PTR_ERR(clk));
+ return;
+ }
+ clk_prepare_enable(clk);
for (p = pdev->dev.platform_data; p->flags != 0; ++p)
p->uartclk = clk_get_rate(clk);
}
+/* CPUFreq */
+static struct plat_ls1x_cpufreq ls1x_cpufreq_pdata = {
+ .clk_name = "cpu_clk",
+ .osc_clk_name = "osc_33m_clk",
+ .max_freq = 266 * 1000,
+ .min_freq = 33 * 1000,
+};
+
+struct platform_device ls1x_cpufreq_pdev = {
+ .name = "ls1x-cpufreq",
+ .dev = {
+ .platform_data = &ls1x_cpufreq_pdata,
+ },
+};
+
/* Synopsys Ethernet GMAC */
+static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
+ .phy_mask = 0,
+};
+
+static struct stmmac_dma_cfg ls1x_eth_dma_cfg = {
+ .pbl = 1,
+};
+
+int ls1x_eth_mux_init(struct platform_device *pdev, void *priv)
+{
+ struct plat_stmmacenet_data *plat_dat = NULL;
+ u32 val;
+
+ val = __raw_readl(LS1X_MUX_CTRL1);
+
+ plat_dat = dev_get_platdata(&pdev->dev);
+ if (plat_dat->bus_id) {
+ __raw_writel(__raw_readl(LS1X_MUX_CTRL0) | GMAC1_USE_UART1 |
+ GMAC1_USE_UART0, LS1X_MUX_CTRL0);
+ switch (plat_dat->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val &= ~(GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ val |= (GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
+ break;
+ default:
+ pr_err("unsupported mii mode %d\n",
+ plat_dat->interface);
+ return -ENOTSUPP;
+ }
+ val &= ~GMAC1_SHUT;
+ } else {
+ switch (plat_dat->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val &= ~(GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ val |= (GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
+ break;
+ default:
+ pr_err("unsupported mii mode %d\n",
+ plat_dat->interface);
+ return -ENOTSUPP;
+ }
+ val &= ~GMAC0_SHUT;
+ }
+ __raw_writel(val, LS1X_MUX_CTRL1);
+
+ return 0;
+}
+
+static struct plat_stmmacenet_data ls1x_eth0_pdata = {
+ .bus_id = 0,
+ .phy_addr = -1,
+ .interface = PHY_INTERFACE_MODE_MII,
+ .mdio_bus_data = &ls1x_mdio_bus_data,
+ .dma_cfg = &ls1x_eth_dma_cfg,
+ .has_gmac = 1,
+ .tx_coe = 1,
+ .init = ls1x_eth_mux_init,
+};
+
static struct resource ls1x_eth0_resources[] = {
[0] = {
.start = LS1X_GMAC0_BASE,
@@ -71,25 +154,47 @@ static struct resource ls1x_eth0_resources[] = {
},
};
-static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
- .phy_mask = 0,
+struct platform_device ls1x_eth0_pdev = {
+ .name = "stmmaceth",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(ls1x_eth0_resources),
+ .resource = ls1x_eth0_resources,
+ .dev = {
+ .platform_data = &ls1x_eth0_pdata,
+ },
};
-static struct plat_stmmacenet_data ls1x_eth_data = {
- .bus_id = 0,
+static struct plat_stmmacenet_data ls1x_eth1_pdata = {
+ .bus_id = 1,
.phy_addr = -1,
+ .interface = PHY_INTERFACE_MODE_MII,
.mdio_bus_data = &ls1x_mdio_bus_data,
+ .dma_cfg = &ls1x_eth_dma_cfg,
.has_gmac = 1,
.tx_coe = 1,
+ .init = ls1x_eth_mux_init,
};
-struct platform_device ls1x_eth0_device = {
+static struct resource ls1x_eth1_resources[] = {
+ [0] = {
+ .start = LS1X_GMAC1_BASE,
+ .end = LS1X_GMAC1_BASE + SZ_64K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .name = "macirq",
+ .start = LS1X_GMAC1_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device ls1x_eth1_pdev = {
.name = "stmmaceth",
- .id = 0,
- .num_resources = ARRAY_SIZE(ls1x_eth0_resources),
- .resource = ls1x_eth0_resources,
+ .id = 1,
+ .num_resources = ARRAY_SIZE(ls1x_eth1_resources),
+ .resource = ls1x_eth1_resources,
.dev = {
- .platform_data = &ls1x_eth_data,
+ .platform_data = &ls1x_eth1_pdata,
},
};
@@ -111,7 +216,7 @@ static struct resource ls1x_ehci_resources[] = {
static struct usb_ehci_pdata ls1x_ehci_pdata = {
};
-struct platform_device ls1x_ehci_device = {
+struct platform_device ls1x_ehci_pdev = {
.name = "ehci-platform",
.id = -1,
.num_resources = ARRAY_SIZE(ls1x_ehci_resources),
@@ -123,7 +228,7 @@ struct platform_device ls1x_ehci_device = {
};
/* Real Time Clock */
-struct platform_device ls1x_rtc_device = {
+struct platform_device ls1x_rtc_pdev = {
.name = "ls1x-rtc",
.id = -1,
};
diff --git a/arch/mips/loongson1/ls1b/board.c b/arch/mips/loongson1/ls1b/board.c
index b26b10d..58daeea 100644
--- a/arch/mips/loongson1/ls1b/board.c
+++ b/arch/mips/loongson1/ls1b/board.c
@@ -10,17 +10,19 @@
#include <platform.h>
static struct platform_device *ls1b_platform_devices[] __initdata = {
- &ls1x_uart_device,
- &ls1x_eth0_device,
- &ls1x_ehci_device,
- &ls1x_rtc_device,
+ &ls1x_uart_pdev,
+ &ls1x_cpufreq_pdev,
+ &ls1x_eth0_pdev,
+ &ls1x_eth1_pdev,
+ &ls1x_ehci_pdev,
+ &ls1x_rtc_pdev,
};
static int __init ls1b_platform_init(void)
{
int err;
- ls1x_serial_setup(&ls1x_uart_device);
+ ls1x_serial_setup(&ls1x_uart_pdev);
err = platform_add_devices(ls1b_platform_devices,
ARRAY_SIZE(ls1b_platform_devices));
--
1.9.1
