commit: 65f83802b7a5b "serial: 16550: Add getfcr accessor" breaks u-boot commandline working with long commands sending to the board.
Since the above patch, you have to setup the fcr register.
For board/archs which enable OF_PLATDATA, the new field fcr in struct ns16550_platdata is not filled with a default value ...
This leads in not setting up the uarts fifo, which ends in problems, when you send long commands to u-boots commandline.
Detected this issue with automated tbot tests on am335x based shc board.
The error does not popup, if you type commands. You need to copy&paste a long command to u-boots commandshell (or send a long command with tbot)
Possible boards/plattforms with problems: ./arch/arm/cpu/arm926ejs/lpc32xx/devices.c ./arch/arm/mach-tegra/board.c ./board/overo/overo.c ./board/quipos/cairo/cairo.c ./board/logicpd/omap3som/omap3logic.c ./board/logicpd/zoom1/zoom1.c ./board/timll/devkit8000/devkit8000.c ./board/lg/sniper/sniper.c ./board/ti/beagle/beagle.c ./drivers/serial/serial_rockchip.c
Signed-off-by: Heiko Schocher hs@denx.de Signed-off-by: Ladislav Michl ladis@linux-mips.org ---
Changes in v2: - added now changes for possible boards/plattforms with problems: ./arch/arm/cpu/arm926ejs/lpc32xx/devices.c ./arch/arm/mach-tegra/board.c ./board/isee/igep00x0/igep00x0.c ./board/overo/overo.c ./board/quipos/cairo/cairo.c ./board/logicpd/omap3som/omap3logic.c ./board/logicpd/zoom1/zoom1.c ./board/timll/devkit8000/devkit8000.c ./board/lg/sniper/sniper.c ./board/ti/beagle/beagle.c ./drivers/serial/serial_rockchip.c - Ladislav reported the error on igep00x0 board too, also Adam for the omap3logic board. - add Signed-off-by from Ladislav, he also tested the patch for the igep00x0 board. - add trailing ',' to new lines, as Tom suggested.
arch/arm/cpu/arm926ejs/lpc32xx/devices.c | 12 ++++++++---- arch/arm/mach-omap2/am33xx/board.c | 18 ++++++++++++------ arch/arm/mach-tegra/board.c | 1 + board/isee/igep00x0/igep00x0.c | 3 ++- board/lg/sniper/sniper.c | 3 ++- board/logicpd/omap3som/omap3logic.c | 3 ++- board/logicpd/zoom1/zoom1.c | 3 ++- board/overo/overo.c | 3 ++- board/quipos/cairo/cairo.c | 3 ++- board/ti/beagle/beagle.c | 3 ++- board/timll/devkit8000/devkit8000.c | 3 ++- drivers/serial/ns16550.c | 9 +++------ drivers/serial/serial_rockchip.c | 1 + include/ns16550.h | 5 +++++ 14 files changed, 46 insertions(+), 24 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c index 399b07c..f744398 100644 --- a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c +++ b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c @@ -45,10 +45,14 @@ void lpc32xx_uart_init(unsigned int uart_id)
#if !CONFIG_IS_ENABLED(OF_CONTROL) static const struct ns16550_platdata lpc32xx_uart[] = { - { .base = UART3_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, - { .base = UART4_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, - { .base = UART5_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, - { .base = UART6_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = UART3_BASE, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + { .base = UART4_BASE, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + { .base = UART5_BASE, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + { .base = UART6_BASE, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, };
#if defined(CONFIG_LPC32XX_HSUART) diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c index 73824df..190310f 100644 --- a/arch/arm/mach-omap2/am33xx/board.c +++ b/arch/arm/mach-omap2/am33xx/board.c @@ -40,14 +40,20 @@ DECLARE_GLOBAL_DATA_PTR;
#if !CONFIG_IS_ENABLED(OF_CONTROL) static const struct ns16550_platdata am33xx_serial[] = { - { .base = CONFIG_SYS_NS16550_COM1, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = CONFIG_SYS_NS16550_COM1, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, # ifdef CONFIG_SYS_NS16550_COM2 - { .base = CONFIG_SYS_NS16550_COM2, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = CONFIG_SYS_NS16550_COM2, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, # ifdef CONFIG_SYS_NS16550_COM3 - { .base = CONFIG_SYS_NS16550_COM3, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, - { .base = CONFIG_SYS_NS16550_COM4, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, - { .base = CONFIG_SYS_NS16550_COM5, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, - { .base = CONFIG_SYS_NS16550_COM6, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = CONFIG_SYS_NS16550_COM3, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + { .base = CONFIG_SYS_NS16550_COM4, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + { .base = CONFIG_SYS_NS16550_COM5, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + { .base = CONFIG_SYS_NS16550_COM6, .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, # endif # endif }; diff --git a/arch/arm/mach-tegra/board.c b/arch/arm/mach-tegra/board.c index 3d1d26d..b3a041b 100644 --- a/arch/arm/mach-tegra/board.c +++ b/arch/arm/mach-tegra/board.c @@ -219,6 +219,7 @@ static struct ns16550_platdata ns16550_com1_pdata = { .base = CONFIG_SYS_NS16550_COM1, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(ns16550_com1) = { diff --git a/board/isee/igep00x0/igep00x0.c b/board/isee/igep00x0/igep00x0.c index ae7959b..5a3498f 100644 --- a/board/isee/igep00x0/igep00x0.c +++ b/board/isee/igep00x0/igep00x0.c @@ -32,7 +32,8 @@ DECLARE_GLOBAL_DATA_PTR; static const struct ns16550_platdata igep_serial = { .base = OMAP34XX_UART3, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(igep_uart) = { diff --git a/board/lg/sniper/sniper.c b/board/lg/sniper/sniper.c index 0662449..b2b8f88 100644 --- a/board/lg/sniper/sniper.c +++ b/board/lg/sniper/sniper.c @@ -31,7 +31,8 @@ const omap3_sysinfo sysinfo = { static const struct ns16550_platdata serial_omap_platdata = { .base = OMAP34XX_UART3, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(sniper_serial) = { diff --git a/board/logicpd/omap3som/omap3logic.c b/board/logicpd/omap3som/omap3logic.c index 21b3fdc..b2fcc28 100644 --- a/board/logicpd/omap3som/omap3logic.c +++ b/board/logicpd/omap3som/omap3logic.c @@ -49,7 +49,8 @@ DECLARE_GLOBAL_DATA_PTR; static const struct ns16550_platdata omap3logic_serial = { .base = OMAP34XX_UART1, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(omap3logic_uart) = { diff --git a/board/logicpd/zoom1/zoom1.c b/board/logicpd/zoom1/zoom1.c index 2821ee2..0fad23a 100644 --- a/board/logicpd/zoom1/zoom1.c +++ b/board/logicpd/zoom1/zoom1.c @@ -47,7 +47,8 @@ static const u32 gpmc_lab_enet[] = { static const struct ns16550_platdata zoom1_serial = { .base = OMAP34XX_UART3, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(zoom1_uart) = { diff --git a/board/overo/overo.c b/board/overo/overo.c index 40f13e5..5e44726 100644 --- a/board/overo/overo.c +++ b/board/overo/overo.c @@ -70,7 +70,8 @@ static struct { static const struct ns16550_platdata overo_serial = { .base = OMAP34XX_UART3, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(overo_uart) = { diff --git a/board/quipos/cairo/cairo.c b/board/quipos/cairo/cairo.c index 77e4482..793aa90 100644 --- a/board/quipos/cairo/cairo.c +++ b/board/quipos/cairo/cairo.c @@ -93,7 +93,8 @@ void get_board_mem_timings(struct board_sdrc_timings *timings) static const struct ns16550_platdata cairo_serial = { .base = OMAP34XX_UART2, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(cairo_uart) = { diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c index cfdab3e..23c7933 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -75,7 +75,8 @@ static struct { static const struct ns16550_platdata beagle_serial = { .base = OMAP34XX_UART3, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(beagle_uart) = { diff --git a/board/timll/devkit8000/devkit8000.c b/board/timll/devkit8000/devkit8000.c index f785dbe..b2f060b 100644 --- a/board/timll/devkit8000/devkit8000.c +++ b/board/timll/devkit8000/devkit8000.c @@ -48,7 +48,8 @@ static u32 gpmc_net_config[GPMC_MAX_REG] = { static const struct ns16550_platdata devkit8000_serial = { .base = OMAP34XX_UART3, .reg_shift = 2, - .clock = V_NS16550_CLK + .clock = V_NS16550_CLK, + .fcr = UART_FCR_DEFVAL, };
U_BOOT_DEVICE(devkit8000_uart) = { diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c index 9b423a5..2df4a1f 100644 --- a/drivers/serial/ns16550.c +++ b/drivers/serial/ns16550.c @@ -20,9 +20,6 @@ DECLARE_GLOBAL_DATA_PTR; #define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */ #define UART_MCRVAL (UART_MCR_DTR | \ UART_MCR_RTS) /* RTS/DTR */ -#define UART_FCRVAL (UART_FCR_FIFO_EN | \ - UART_FCR_RXSR | \ - UART_FCR_TXSR) /* Clear & enable FIFOs */
#ifndef CONFIG_DM_SERIAL #ifdef CONFIG_SYS_NS16550_PORT_MAPPED @@ -138,7 +135,7 @@ static u32 ns16550_getfcr(NS16550_t port) #else static u32 ns16550_getfcr(NS16550_t port) { - return UART_FCRVAL; + return UART_FCR_DEFVAL; } #endif
@@ -275,7 +272,7 @@ static inline void _debug_uart_init(void) CONFIG_BAUDRATE); serial_dout(&com_port->ier, CONFIG_SYS_NS16550_IER); serial_dout(&com_port->mcr, UART_MCRVAL); - serial_dout(&com_port->fcr, UART_FCRVAL); + serial_dout(&com_port->fcr, UART_FCR_DEFVAL);
serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL); serial_dout(&com_port->dll, baud_divisor & 0xff); @@ -440,7 +437,7 @@ int ns16550_serial_ofdata_to_platdata(struct udevice *dev) return -EINVAL; }
- plat->fcr = UART_FCRVAL; + plat->fcr = UART_FCR_DEFVAL; if (port_type == PORT_JZ4780) plat->fcr |= UART_FCR_UME;
diff --git a/drivers/serial/serial_rockchip.c b/drivers/serial/serial_rockchip.c index 6bac95a..c06afc5 100644 --- a/drivers/serial/serial_rockchip.c +++ b/drivers/serial/serial_rockchip.c @@ -27,6 +27,7 @@ static int rockchip_serial_probe(struct udevice *dev) plat->plat.base = plat->dtplat.reg[0]; plat->plat.reg_shift = plat->dtplat.reg_shift; plat->plat.clock = plat->dtplat.clock_frequency; + plat->plat.fcr = UART_FCR_DEFVAL; dev->platdata = &plat->plat;
return ns16550_serial_probe(dev); diff --git a/include/ns16550.h b/include/ns16550.h index 7c97036..5fcbcd2 100644 --- a/include/ns16550.h +++ b/include/ns16550.h @@ -121,6 +121,11 @@ typedef struct NS16550 *NS16550_t; /* Ingenic JZ47xx specific UART-enable bit. */ #define UART_FCR_UME 0x10
+/* Clear & enable FIFOs */ +#define UART_FCR_DEFVAL (UART_FCR_FIFO_EN | \ + UART_FCR_RXSR | \ + UART_FCR_TXSR) + /* * These are the definitions for the Modem Control Register */