From 50dc25932eb31fca15104968e596b7035ce9ece1 Mon Sep 17 00:00:00 2001 From: Xuzhou Cheng Date: Fri, 29 Jan 2021 21:23:20 +0800 Subject: [PATCH] hw/ssi: imx_spi: Disable chip selects when controller is disabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When a write to ECSPI_CONREG register to disable the SPI controller, imx_spi_soft_reset() is called to reset the controller, but chip select lines should have been disabled, otherwise the state machine of any devices (e.g.: SPI flashes) connected to the SPI master is stuck to its last state and responds incorrectly to any follow-up commands. Fixes: c906a3a01582 ("i.MX: Add the Freescale SPI Controller") Signed-off-by: Xuzhou Cheng Signed-off-by: Bin Meng Reviewed-by: Philippe Mathieu-Daudé Message-id: 20210129132323.30946-8-bmeng.cn@gmail.com Signed-off-by: Peter Maydell --- hw/ssi/imx_spi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/ssi/imx_spi.c b/hw/ssi/imx_spi.c index 4cfbb73e35..2fb65498c3 100644 --- a/hw/ssi/imx_spi.c +++ b/hw/ssi/imx_spi.c @@ -254,9 +254,15 @@ static void imx_spi_common_reset(IMXSPIState *s) static void imx_spi_soft_reset(IMXSPIState *s) { + int i; + imx_spi_common_reset(s); imx_spi_update_irq(s); + + for (i = 0; i < ECSPI_NUM_CS; i++) { + qemu_set_irq(s->cs_lines[i], 1); + } } static void imx_spi_reset(DeviceState *dev)