From e10b06ecb0703c9dd69fa627c8d49c7eb6379bdb Mon Sep 17 00:00:00 2001 From: Jaewon Kim Date: Tue, 16 Aug 2016 18:47:38 +0900 Subject: [PATCH] board: samsung: artik5: setup pwm early This patch setups pwm channel 0 and 1 in order to maintain the pwm gpio signal to low until use in kernel. Change-Id: I170c1af8f686a0ea7cc37f385ab4a657b1fcd054 Signed-off-by: Jaewon Kim --- board/samsung/espresso3250/espresso3250.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/board/samsung/espresso3250/espresso3250.c b/board/samsung/espresso3250/espresso3250.c index 0df24873f..394022c4f 100644 --- a/board/samsung/espresso3250/espresso3250.c +++ b/board/samsung/espresso3250/espresso3250.c @@ -44,6 +44,18 @@ DECLARE_GLOBAL_DATA_PTR; unsigned int OmPin; +void pwm_early_init(unsigned int channel) +{ + struct exynos3_gpio_part1 *bank = + (struct exynos3_gpio_part1 *)samsung_get_base_gpio_part1(); + + if (channel > 4) + return; + + pwm_enable(channel); + pwm_disable(channel); + s5p_gpio_cfg_pin(&bank->d0, channel, GPIO_FUNC(0x2)); +} int board_init(void) { @@ -129,6 +141,10 @@ int board_init(void) printf(" Please check OM_pin\n"); } + /* Enable PWM to maintain the PWM output signal to low */ + pwm_early_init(0); + pwm_early_init(1); + return 0; } -- 2.34.1