[PATCH v2 08/13] da850: pruss CAN board specific changes for gpios.
From: Subhasish Ghosh <hidden>
Date: 2011-02-11 14:38:39
Also in:
lkml
Subsystem:
arm port, the rest, ti davinci machine support · Maintainers:
Russell King, Linus Torvalds, Bartosz Golaszewski
This patch adds the GPIO modifications required for the pruss CAN. Signed-off-by: Subhasish Ghosh <redacted> --- arch/arm/mach-davinci/board-da850-evm.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 2ce5536..f9c38f8 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c@@ -45,6 +45,7 @@ #define DA850_MMCSD_CD_PIN GPIO_TO_PIN(4, 0) #define DA850_MMCSD_WP_PIN GPIO_TO_PIN(4, 1) +#define DA850_PRUSS_CAN_TRX_PIN GPIO_TO_PIN(2, 0) #define DA850_MII_MDIO_CLKEN_PIN GPIO_TO_PIN(2, 6)
@@ -1055,7 +1056,7 @@ static __init int da850_evm_init_cpufreq(void) { return 0; } const short da850_evm_pruss_can_pins[] = { DA850_PRUSS_PRU0_R31_0, DA850_PRUSS_PRU1_R30_15, - DA850_PRUSS_PRU1_R31_18, + DA850_PRUSS_PRU1_R31_18, DA850_GPIO2_0, -1 };
@@ -1073,6 +1074,14 @@ static int __init da850_evm_setup_pruss_can(void) val |= BIT(3); __raw_writel(val, cfg_chip3_reg); + /* value = 0 to enable the CAN transceiver */ + ret = gpio_request_one(DA850_PRUSS_CAN_TRX_PIN, + GPIOF_OUT_INIT_LOW, "pruss_can_en"); + if (ret) { + pr_warning("Cannot setup GPIO %d\n", DA850_PRUSS_CAN_TRX_PIN); + gpio_free(DA850_PRUSS_CAN_TRX_PIN); + } + return ret; }
--
1.7.2.3