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-rw-r--r--Documentation/boards/bcm2835.rst1
-rw-r--r--arch/arm/boards/raspberry-pi/rpi-common.c69
-rw-r--r--arch/arm/boards/raspberry-pi/rpi.h1
-rw-r--r--arch/arm/configs/rpi_defconfig1
-rw-r--r--arch/arm/dts/bcm2837-rpi-3.dts7
-rw-r--r--arch/arm/mach-bcm283x/core.c19
-rw-r--r--arch/arm/mach-bcm283x/include/mach/mbox.h42
-rw-r--r--drivers/mci/mci-bcm2835.c10
-rw-r--r--drivers/serial/serial_ns16550.c74
9 files changed, 140 insertions, 84 deletions
diff --git a/Documentation/boards/bcm2835.rst b/Documentation/boards/bcm2835.rst
index 79ea0ff..ea80d58 100644
--- a/Documentation/boards/bcm2835.rst
+++ b/Documentation/boards/bcm2835.rst
@@ -22,7 +22,6 @@ Raspberry Pi
kernel=barebox.img
enable_uart=1
- dtoverlay=pi3-miniuart-bt
(For more information, refer to the `documentation for config.txt`_.)
diff --git a/arch/arm/boards/raspberry-pi/rpi-common.c b/arch/arm/boards/raspberry-pi/rpi-common.c
index b2febec..b5d16a1 100644
--- a/arch/arm/boards/raspberry-pi/rpi-common.c
+++ b/arch/arm/boards/raspberry-pi/rpi-common.c
@@ -73,7 +73,7 @@ static int rpi_get_arm_mem(u32 *size)
return 0;
}
-static struct clk *rpi_register_firmare_clock(u32 clock_id, const char *name)
+static struct clk *rpi_register_firmware_clock(u32 clock_id, const char *name)
{
BCM2835_MBOX_STACK_ALIGN(struct msg_get_clock_rate, msg);
int ret;
@@ -121,7 +121,7 @@ struct gpio_led rpi_leds[] = {
},
};
-void rpi_add_led(void)
+static void rpi_add_led(void)
{
int i;
struct gpio_led *l;
@@ -138,14 +138,14 @@ void rpi_add_led(void)
led_set_trigger(LED_TRIGGER_HEARTBEAT, &l->led);
}
-void rpi_b_init(void)
+static void rpi_b_init(void)
{
rpi_leds[0].gpio = 16;
rpi_leds[0].active_low = 1;
rpi_set_usbethaddr();
}
-void rpi_b_plus_init(void)
+static void rpi_b_plus_init(void)
{
rpi_leds[0].gpio = 47;
rpi_leds[1].gpio = 35;
@@ -166,17 +166,30 @@ const struct rpi_model rpi_models_old_scheme[] = {
RPI_MODEL(BCM2835_BOARD_REV_B_REV2_d, "Model B rev2", rpi_b_init),
RPI_MODEL(BCM2835_BOARD_REV_B_REV2_e, "Model B rev2", rpi_b_init),
RPI_MODEL(BCM2835_BOARD_REV_B_REV2_f, "Model B rev2", rpi_b_init),
- RPI_MODEL(BCM2835_BOARD_REV_B_PLUS, "Model B+", rpi_b_plus_init),
- RPI_MODEL(BCM2835_BOARD_REV_CM, "Compute Module", NULL),
- RPI_MODEL(BCM2835_BOARD_REV_A_PLUS, "Model A+", NULL),
+ RPI_MODEL(BCM2835_BOARD_REV_B_PLUS_10, "Model B+", rpi_b_plus_init),
+ RPI_MODEL(BCM2835_BOARD_REV_CM_11, "Compute Module", NULL),
+ RPI_MODEL(BCM2835_BOARD_REV_A_PLUS_12, "Model A+", NULL),
+ RPI_MODEL(BCM2835_BOARD_REV_B_PLUS_13, "Model B+", rpi_b_plus_init),
+ RPI_MODEL(BCM2835_BOARD_REV_CM_14, "Compute Module", NULL),
+ RPI_MODEL(BCM2835_BOARD_REV_A_PLUS_15, "Model A+", NULL),
};
const struct rpi_model rpi_models_new_scheme[] = {
- RPI_MODEL(0, "Unknown model", NULL),
- RPI_MODEL(BCM2836_BOARD_REV_2_B, "2 Model B", rpi_b_plus_init),
- RPI_MODEL(BCM2837_BOARD_REV_3_B, "3 Model B", rpi_b_plus_init),
- RPI_MODEL(BCM2835_BOARD_REV_ZERO, "Zero", rpi_b_plus_init),
- RPI_MODEL(BCM2835_BOARD_REV_ZERO_W, "Zero W", rpi_b_plus_init),
+ RPI_MODEL(BCM2835_BOARD_REV_A, "Model A", NULL ),
+ RPI_MODEL(BCM2835_BOARD_REV_B, "Model B", rpi_b_init ),
+ RPI_MODEL(BCM2835_BOARD_REV_A_PLUS, "Model A+", NULL ),
+ RPI_MODEL(BCM2835_BOARD_REV_B_PLUS, "Model B+", rpi_b_plus_init ),
+ RPI_MODEL(BCM2836_BOARD_REV_2_B, "Model 2B", rpi_b_plus_init),
+ RPI_MODEL(BCM283x_BOARD_REV_Alpha, "Alpha", NULL),
+ RPI_MODEL(BCM2835_BOARD_REV_CM1, "Compute Module", NULL ),
+ RPI_MODEL(0x7, "Unknown model", NULL),
+ RPI_MODEL(BCM2837_BOARD_REV_3_B, "Model 3B", rpi_b_init ),
+ RPI_MODEL(BCM2835_BOARD_REV_ZERO, "Zero", rpi_b_plus_init),
+ RPI_MODEL(BCM2837_BOARD_REV_CM3, "Compute Module 3", NULL ),
+ RPI_MODEL(0xb, "Unknown model", NULL),
+ RPI_MODEL(BCM2835_BOARD_REV_ZERO_W, "Zero W", rpi_b_plus_init),
+ RPI_MODEL(BCM2837B0_BOARD_REV_3B_PLUS, "Model 3 B+", rpi_b_plus_init ),
+ RPI_MODEL(BCM2837B0_BOARD_REV_3A_PLUS, "Nodel 3 A+", rpi_b_plus_init),
};
static int rpi_board_rev = 0;
@@ -289,7 +302,7 @@ static int rpi_clock_init(void)
{
struct clk *clk;
- clk = rpi_register_firmare_clock(BCM2835_MBOX_CLOCK_ID_EMMC,
+ clk = rpi_register_firmware_clock(BCM2835_MBOX_CLOCK_ID_EMMC,
"bcm2835_mci0");
if (IS_ERR(clk))
return PTR_ERR(clk);
@@ -301,6 +314,36 @@ static int rpi_clock_init(void)
}
postconsole_initcall(rpi_clock_init);
+#define BCM2835_PL011_BASE 0x20201000
+#define BCM2836_PL011_BASE 0x3f201000
+#define BCM2836_MINIUART_BASE 0x3f215040
+
+static int rpi_console_clock_init(void)
+{
+ struct clk *clk;
+
+ clk = clk_fixed("apb_pclk", 0);
+ clk_register_clkdev(clk, "apb_pclk", NULL);
+
+ clk = clk_fixed("uart0-pl0110", 3 * 1000 * 1000);
+ clk_register_clkdev(clk, NULL, "uart0-pl0110");
+ clkdev_add_physbase(clk, BCM2835_PL011_BASE, NULL);
+ clkdev_add_physbase(clk, BCM2836_PL011_BASE, NULL);
+
+ clk = rpi_register_firmware_clock(BCM2835_MBOX_CLOCK_ID_CORE,
+ "uart1-8250");
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ clkdev_add_physbase(clk, BCM2836_MINIUART_BASE, NULL);
+
+ clk = clk_fixed("bcm2835-cs", 1 * 1000 * 1000);
+ clk_register_clkdev(clk, NULL, "bcm2835-cs");
+
+ return 0;
+}
+postcore_initcall(rpi_console_clock_init);
+
static int rpi_env_init(void)
{
struct stat s;
diff --git a/arch/arm/boards/raspberry-pi/rpi.h b/arch/arm/boards/raspberry-pi/rpi.h
index dd32fee..b2a0401 100644
--- a/arch/arm/boards/raspberry-pi/rpi.h
+++ b/arch/arm/boards/raspberry-pi/rpi.h
@@ -19,7 +19,6 @@ struct rpi_model {
extern struct gpio_led rpi_leds[];
-void rpi_b_plus_init(void);
void rpi_set_usbethaddr(void);
#endif /* __ARCH_ARM_BOARDS_RPI_H__ */
diff --git a/arch/arm/configs/rpi_defconfig b/arch/arm/configs/rpi_defconfig
index 2bb6158..dc5ab1f 100644
--- a/arch/arm/configs/rpi_defconfig
+++ b/arch/arm/configs/rpi_defconfig
@@ -63,6 +63,7 @@ CONFIG_CMD_OF_PROPERTY=y
CONFIG_CMD_OFTREE=y
CONFIG_CMD_TIME=y
CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_DRIVER_SERIAL_NS16550=y
CONFIG_MCI=y
CONFIG_MCI_BCM283X=y
CONFIG_LED=y
diff --git a/arch/arm/dts/bcm2837-rpi-3.dts b/arch/arm/dts/bcm2837-rpi-3.dts
index d6ffc36..194b41c 100644
--- a/arch/arm/dts/bcm2837-rpi-3.dts
+++ b/arch/arm/dts/bcm2837-rpi-3.dts
@@ -2,15 +2,10 @@
/ {
chosen {
- stdout-path = &uart0;
+ stdout-path = &uart1;
};
memory {
reg = <0x0 0x0>;
};
};
-
-&uart0 {
- status = "okay";
- /delete-node/ bluetooth;
-};
diff --git a/arch/arm/mach-bcm283x/core.c b/arch/arm/mach-bcm283x/core.c
index f1dcda8..f2528cf 100644
--- a/arch/arm/mach-bcm283x/core.c
+++ b/arch/arm/mach-bcm283x/core.c
@@ -31,25 +31,6 @@
#include <mach/core.h>
#include <linux/amba/bus.h>
-static int bcm2835_clk_init(void)
-{
- struct clk *clk;
-
- clk = clk_fixed("apb_pclk", 0);
- clk_register_clkdev(clk, "apb_pclk", NULL);
-
- clk = clk_fixed("uart0-pl0110", 3 * 1000 * 1000);
- clk_register_clkdev(clk, NULL, "uart0-pl0110");
- clkdev_add_physbase(clk, 0x20201000, NULL);
- clkdev_add_physbase(clk, 0x3f201000, NULL);
-
- clk = clk_fixed("bcm2835-cs", 1 * 1000 * 1000);
- clk_register_clkdev(clk, NULL, "bcm2835-cs");
-
- return 0;
-}
-postcore_initcall(bcm2835_clk_init);
-
void bcm2835_add_device_sdram(u32 size)
{
if (!size)
diff --git a/arch/arm/mach-bcm283x/include/mach/mbox.h b/arch/arm/mach-bcm283x/include/mach/mbox.h
index 76b573f..e4f6cb6 100644
--- a/arch/arm/mach-bcm283x/include/mach/mbox.h
+++ b/arch/arm/mach-bcm283x/include/mach/mbox.h
@@ -127,20 +127,12 @@ struct bcm2835_mbox_tag_hdr {
#define BCM2835_MBOX_TAG_GET_BOARD_REV 0x00010002
-/* RPi 2 */
-#define BCM2836_BOARD_REV_2_B 0x4
-/* RPi 3 */
-#define BCM2837_BOARD_REV_3_B 0x8
-/* Zero */
-#define BCM2835_BOARD_REV_ZERO 0x9
-/* Zero W */
-#define BCM2835_BOARD_REV_ZERO_W 0xc
-
/*
- * 0x2..0xf from:
- * http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
- * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
- * 0x10, 0x11 from swarren's testing
+ * ids
+ * https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
+ * cpu info
+ * https://en.wikipedia.org/wiki/Raspberry_Pi#Processor
+ *
*/
#define BCM2835_BOARD_REV_B_I2C0_2 0x2
#define BCM2835_BOARD_REV_B_I2C0_3 0x3
@@ -153,9 +145,27 @@ struct bcm2835_mbox_tag_hdr {
#define BCM2835_BOARD_REV_B_REV2_d 0xd
#define BCM2835_BOARD_REV_B_REV2_e 0xe
#define BCM2835_BOARD_REV_B_REV2_f 0xf
-#define BCM2835_BOARD_REV_B_PLUS 0x10
-#define BCM2835_BOARD_REV_CM 0x11
-#define BCM2835_BOARD_REV_A_PLUS 0x12
+#define BCM2835_BOARD_REV_B_PLUS_10 0x10
+#define BCM2835_BOARD_REV_CM_11 0x11
+#define BCM2835_BOARD_REV_A_PLUS_12 0x12
+#define BCM2835_BOARD_REV_B_PLUS_13 0x13
+#define BCM2835_BOARD_REV_CM_14 0x14
+#define BCM2835_BOARD_REV_A_PLUS_15 0x15
+
+
+#define BCM2835_BOARD_REV_A 0x00
+#define BCM2835_BOARD_REV_B 0x01
+#define BCM2835_BOARD_REV_A_PLUS 0x02
+#define BCM2835_BOARD_REV_B_PLUS 0x03
+#define BCM2836_BOARD_REV_2_B 0x04
+#define BCM283x_BOARD_REV_Alpha 0x05
+#define BCM2835_BOARD_REV_CM1 0x06
+#define BCM2837_BOARD_REV_3_B 0x08
+#define BCM2835_BOARD_REV_ZERO 0x09
+#define BCM2837_BOARD_REV_CM3 0x0a
+#define BCM2835_BOARD_REV_ZERO_W 0x0c
+#define BCM2837B0_BOARD_REV_3B_PLUS 0x0d
+#define BCM2837B0_BOARD_REV_3A_PLUS 0x0e
struct bcm2835_mbox_tag_get_board_rev {
struct bcm2835_mbox_tag_hdr tag_hdr;
diff --git a/drivers/mci/mci-bcm2835.c b/drivers/mci/mci-bcm2835.c
index daf7719..9438e66 100644
--- a/drivers/mci/mci-bcm2835.c
+++ b/drivers/mci/mci-bcm2835.c
@@ -53,7 +53,7 @@ struct bcm2835_mci_host {
uint64_t last_write;
};
-void bcm2835_mci_write(struct bcm2835_mci_host *host, u32 reg, u32 val)
+static void bcm2835_mci_write(struct bcm2835_mci_host *host, u32 reg, u32 val)
{
/*
* The Arasan has a bugette whereby it may lose the content of
@@ -71,7 +71,7 @@ void bcm2835_mci_write(struct bcm2835_mci_host *host, u32 reg, u32 val)
writel(val, host->regs + reg);
}
-u32 bcm2835_mci_read(struct bcm2835_mci_host *host, u32 reg)
+static u32 bcm2835_mci_read(struct bcm2835_mci_host *host, u32 reg)
{
return readl(host->regs + reg);
}
@@ -80,13 +80,13 @@ u32 bcm2835_mci_read(struct bcm2835_mci_host *host, u32 reg)
* register is not affected by the twoticks_delay bug
* and we can thus get better speed here
*/
-void bcm2835_mci_write_data(struct bcm2835_mci_host *host, u32 *p)
+static void bcm2835_mci_write_data(struct bcm2835_mci_host *host, u32 *p)
{
writel(*p, host->regs + SDHCI_BUFFER);
}
/* Make a read data functions as well just to keep structure */
-void bcm2835_mci_read_data(struct bcm2835_mci_host *host, u32 *p)
+static void bcm2835_mci_read_data(struct bcm2835_mci_host *host, u32 *p)
{
*p = readl(host->regs + SDHCI_BUFFER);
}
@@ -416,7 +416,7 @@ static void bcm2835_mci_set_ios(struct mci_host *mci, struct mci_ios *ios)
host->bus_width, host->clock);
}
-int bcm2835_mci_reset(struct mci_host *mci, struct device_d *mci_dev)
+static int bcm2835_mci_reset(struct mci_host *mci, struct device_d *mci_dev)
{
struct bcm2835_mci_host *host;
u32 ret = 0;
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c
index 4d73ea8..ccd082e 100644
--- a/drivers/serial/serial_ns16550.c
+++ b/drivers/serial/serial_ns16550.c
@@ -253,6 +253,23 @@ static void ns16550_jz_init_port(struct console_device *cdev)
ns16550_serial_init_port(cdev);
}
+#define BCM2836_AUX_CLOCK_ENB 0x3f215004 /* BCM2835 AUX Clock enable register */
+#define BCM2836_AUX_CLOCK_EN_UART BIT(0) /* Bit 0 enables the Miniuart */
+
+static void rpi_init_port(struct console_device *cdev)
+{
+ struct ns16550_priv *priv = to_ns16550_priv(cdev);
+
+ writeb(BCM2836_AUX_CLOCK_EN_UART, BCM2836_AUX_CLOCK_ENB);
+ priv->plat.shift = 2;
+ /*
+ * We double the clock rate since the 16550 will divide by 16
+ * (instead of 8 required by the BCM2835 peripheral manual)
+ */
+ priv->plat.clock = priv->plat.clock*2;
+ ns16550_serial_init_port(cdev);
+}
+
/*********** Exposed Functions **********************************/
/**
@@ -297,36 +314,36 @@ static int ns16550_tstc(struct console_device *cdev)
static void ns16550_probe_dt(struct device_d *dev, struct ns16550_priv *priv)
{
struct device_node *np = dev->device_node;
- u32 width;
+ u32 width = 1;
if (!IS_ENABLED(CONFIG_OFDEVICE))
return;
of_property_read_u32(np, "clock-frequency", &priv->plat.clock);
of_property_read_u32(np, "reg-shift", &priv->plat.shift);
- if (!of_property_read_u32(np, "reg-io-width", &width))
- switch (width) {
- case 1:
- priv->read_reg = ns16550_read_reg_mmio_8;
- priv->write_reg = ns16550_write_reg_mmio_8;
- break;
- case 2:
- priv->read_reg = ns16550_read_reg_mmio_16;
- priv->write_reg = ns16550_write_reg_mmio_16;
- break;
- case 4:
- if (of_device_is_big_endian(np)) {
- priv->read_reg = ns16550_read_reg_mmio_32be;
- priv->write_reg = ns16550_write_reg_mmio_32be;
- } else {
- priv->read_reg = ns16550_read_reg_mmio_32;
- priv->write_reg = ns16550_write_reg_mmio_32;
- }
- break;
- default:
- dev_err(dev, "unsupported reg-io-width (%d)\n",
- width);
+ of_property_read_u32(np, "reg-io-width", &width);
+ switch (width) {
+ case 1:
+ priv->read_reg = ns16550_read_reg_mmio_8;
+ priv->write_reg = ns16550_write_reg_mmio_8;
+ break;
+ case 2:
+ priv->read_reg = ns16550_read_reg_mmio_16;
+ priv->write_reg = ns16550_write_reg_mmio_16;
+ break;
+ case 4:
+ if (of_device_is_big_endian(np)) {
+ priv->read_reg = ns16550_read_reg_mmio_32be;
+ priv->write_reg = ns16550_write_reg_mmio_32be;
+ } else {
+ priv->read_reg = ns16550_read_reg_mmio_32;
+ priv->write_reg = ns16550_write_reg_mmio_32;
}
+ break;
+ default:
+ dev_err(dev, "unsupported reg-io-width (%d)\n",
+ width);
+ }
}
static struct ns16550_drvdata ns16450_drvdata = {
@@ -353,6 +370,11 @@ static __maybe_unused struct ns16550_drvdata tegra_drvdata = {
.linux_console_name = "ttyS",
};
+static __maybe_unused struct ns16550_drvdata rpi_drvdata = {
+ .init_port = rpi_init_port,
+ .linux_console_name = "ttyS",
+};
+
static int ns16550_init_iomem(struct device_d *dev, struct ns16550_priv *priv)
{
struct resource *iores;
@@ -528,6 +550,12 @@ static struct of_device_id ns16550_serial_dt_ids[] = {
.data = &jz_drvdata,
},
#endif
+#if IS_ENABLED(CONFIG_MACH_RPI_COMMON)
+ {
+ .compatible = "brcm,bcm2835-aux-uart",
+ .data = &rpi_drvdata,
+ },
+#endif
{
/* sentinel */
},