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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-09-12 11:12:54 +0200 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2020-12-04 13:21:15 -0700 |
| commit | 4ba4bd0f87b48d34b5ca68968037fc3aa7658cb7 (patch) | |
| tree | 64241335aba90a4610201fdcf6b6d98f4ab65bfa | |
| parent | a6094e1b0a8e1707ad43c5911b8cf902d98951a4 (diff) | |
| download | u-boot-4ba4bd0f87b48d34b5ca68968037fc3aa7658cb7.zip u-boot-4ba4bd0f87b48d34b5ca68968037fc3aa7658cb7.tar.gz u-boot-4ba4bd0f87b48d34b5ca68968037fc3aa7658cb7.tar.bz2 | |
apalis/colibri_t30: avoid uart input from floating pins
Avoid UART input from floating RX pins on UARTB and UARTC (Colibri T30)
and UARTB, UARTC and UARTD (Apalis T30).
Note: Floating pins may cause spurious break conditions potentially
interrupting U-Boot's autoboot.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
| -rw-r--r-- | board/toradex/apalis_t30/pinmux-config-apalis_t30.h | 9 | ||||
| -rw-r--r-- | board/toradex/colibri_t30/pinmux-config-colibri_t30.h | 7 |
2 files changed, 10 insertions, 6 deletions
diff --git a/board/toradex/apalis_t30/pinmux-config-apalis_t30.h b/board/toradex/apalis_t30/pinmux-config-apalis_t30.h index 8d6696a..3a2cf46 100644 --- a/board/toradex/apalis_t30/pinmux-config-apalis_t30.h +++ b/board/toradex/apalis_t30/pinmux-config-apalis_t30.h @@ -120,7 +120,8 @@ static struct pmux_pingrp_config tegra3_pinmux_common[] = { DEFAULT_PINMUX(ULPI_DATA6_PO7, UARTA, NORMAL, NORMAL, INPUT), DEFAULT_PINMUX(ULPI_DATA7_PO0, UARTA, NORMAL, NORMAL, OUTPUT), DEFAULT_PINMUX(ULPI_CLK_PY0, UARTD, NORMAL, NORMAL, OUTPUT), - DEFAULT_PINMUX(ULPI_DIR_PY1, UARTD, NORMAL, NORMAL, INPUT), + /* UARTD RX, make sure we don't get input form a floating Pin */ + DEFAULT_PINMUX(ULPI_DIR_PY1, UARTD, UP, NORMAL, INPUT), DEFAULT_PINMUX(ULPI_NXT_PY2, UARTD, NORMAL, NORMAL, INPUT), DEFAULT_PINMUX(ULPI_STP_PY3, UARTD, NORMAL, NORMAL, OUTPUT), DEFAULT_PINMUX(DAP3_FS_PP0, I2S2, NORMAL, NORMAL, INPUT), @@ -189,12 +190,14 @@ static struct pmux_pingrp_config tegra3_pinmux_common[] = { LV_PINMUX(VI_MCLK_PT1, VI, NORMAL, NORMAL, OUTPUT, DISABLE, DISABLE), LV_PINMUX(VI_PCLK_PT0, VI, NORMAL, NORMAL, INPUT, DISABLE, DISABLE), LV_PINMUX(VI_VSYNC_PD6, VI, NORMAL, NORMAL, INPUT, DISABLE, DISABLE), - DEFAULT_PINMUX(UART2_RXD_PC3, UARTB, NORMAL, NORMAL, INPUT), + /* UARTB RX, make sure we don't get input form a floating Pin */ + DEFAULT_PINMUX(UART2_RXD_PC3, UARTB, UP, NORMAL, INPUT), DEFAULT_PINMUX(UART2_TXD_PC2, UARTB, NORMAL, NORMAL, OUTPUT), DEFAULT_PINMUX(UART2_RTS_N_PJ6, UARTB, DOWN, TRISTATE, OUTPUT), /* NC */ DEFAULT_PINMUX(UART2_CTS_N_PJ5, UARTB, DOWN, TRISTATE, OUTPUT), /* NC */ DEFAULT_PINMUX(UART3_TXD_PW6, UARTC, NORMAL, NORMAL, OUTPUT), - DEFAULT_PINMUX(UART3_RXD_PW7, UARTC, NORMAL, NORMAL, INPUT), + /* UARTC RX, make sure we don't get input form a floating Pin */ + DEFAULT_PINMUX(UART3_RXD_PW7, UARTC, UP, NORMAL, INPUT), DEFAULT_PINMUX(UART3_CTS_N_PA1, UARTC, NORMAL, NORMAL, INPUT), DEFAULT_PINMUX(UART3_RTS_N_PC0, PWM0, NORMAL, NORMAL, OUTPUT), DEFAULT_PINMUX(PU0, RSVD1, DOWN, TRISTATE, OUTPUT), diff --git a/board/toradex/colibri_t30/pinmux-config-colibri_t30.h b/board/toradex/colibri_t30/pinmux-config-colibri_t30.h index c583583..5ac1a6d 100644 --- a/board/toradex/colibri_t30/pinmux-config-colibri_t30.h +++ b/board/toradex/colibri_t30/pinmux-config-colibri_t30.h @@ -180,7 +180,8 @@ static struct pmux_pingrp_config tegra3_pinmux_common[] = { LV_PINMUX(VI_D7_PL5, SDMMC2, NORMAL, NORMAL, INPUT, DISABLE, DISABLE), LV_PINMUX(VI_D10_PT2, RSVD1, NORMAL, NORMAL, INPUT, DISABLE, DISABLE), LV_PINMUX(VI_MCLK_PT1, VI, UP, NORMAL, INPUT, DISABLE, DISABLE), - DEFAULT_PINMUX(UART2_RXD_PC3, UARTB, NORMAL, NORMAL, INPUT), + /* UARTC RX, make sure we don't get input form a floating Pin */ + DEFAULT_PINMUX(UART2_RXD_PC3, UARTB, UP, NORMAL, INPUT), DEFAULT_PINMUX(UART2_TXD_PC2, UARTB, NORMAL, NORMAL, INPUT), DEFAULT_PINMUX(UART2_RTS_N_PJ6, GMI, NORMAL, NORMAL, INPUT), DEFAULT_PINMUX(UART2_CTS_N_PJ5, GMI, NORMAL, NORMAL, INPUT), @@ -207,11 +208,11 @@ static struct pmux_pingrp_config tegra3_pinmux_common[] = { DEFAULT_PINMUX(GMI_AD8_PH0, PWM0, NORMAL, NORMAL, OUTPUT), /* LCD1_BL_PWM */ DEFAULT_PINMUX(GMI_AD10_PH2, NAND, NORMAL, NORMAL, OUTPUT), /* LCD1_BL_EN */ DEFAULT_PINMUX(GMI_A16_PJ7, UARTD, NORMAL, NORMAL, INPUT), - DEFAULT_PINMUX(GMI_A17_PB0, UARTD, NORMAL, NORMAL, INPUT), + /* UARTB RX, make sure we don't get input form a floating Pin */ + DEFAULT_PINMUX(GMI_A17_PB0, UARTD, UP, NORMAL, INPUT), DEFAULT_PINMUX(GMI_A18_PB1, UARTD, NORMAL, NORMAL, INPUT), DEFAULT_PINMUX(GMI_A19_PK7, UARTD, NORMAL, NORMAL, INPUT), - /* Multiplexed with KB_ROW10/KB_ROW11/KB_ROW12/KB_ROW15 */ DEFAULT_PINMUX(CAM_MCLK_PCC0, VI_ALT2, UP, TRISTATE, INPUT), DEFAULT_PINMUX(PCC1, RSVD1, NORMAL, TRISTATE, INPUT), |