From patchwork Mon Jun 20 13:37:13 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v2] ARM: mach-imx/mx31_3ds: Fix IOMUX for SPI1 signals Date: Mon, 20 Jun 2011 03:37:13 -0000 From: Fabio Estevam X-Patchwork-Id: 101124 Message-Id: <1308577033-10678-1-git-send-email-fabio.estevam@freescale.com> To: Cc: Fabio Estevam , kernel@pengutronix.de Original code was assuming that the CSPI1 pins on the MX31PDK were the primary pin function, which is incorrect. On MX31PDK board these are the pins that provide CSPI1 functionality: DSR_DCE1 (ALT mode 1) --> CSPI1_CLK RI_DCE1 (ALT mode 1) --> CSPI1_RDY DTR_DTE1 -->CSI1_MOSI DSR_DTE1 --> CSPI1_MISO DTR_DCE2 ---> CSPI1_SS2 The 3 IOMUX settings above are done via GPR as per Table A-1 of the MX31RM. This patch fixes the CSPI1 IOMUX and makes the LCD to be functional. Signed-off-by: Fabio Estevam --- Changes since v1: - Provided better explanation about this change on the commit message arch/arm/mach-imx/mach-mx31_3ds.c | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c index ab2a626..a6160ee 100644 --- a/arch/arm/mach-imx/mach-mx31_3ds.c +++ b/arch/arm/mach-imx/mach-mx31_3ds.c @@ -53,11 +53,8 @@ static int mx31_3ds_pins[] = { MX31_PIN_RXD1__RXD1, IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO), /*SPI0*/ - MX31_PIN_CSPI1_SCLK__SCLK, - MX31_PIN_CSPI1_MOSI__MOSI, - MX31_PIN_CSPI1_MISO__MISO, - MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, - MX31_PIN_CSPI1_SS2__SS2, /* CS for LCD */ + IOMUX_MODE(MX31_PIN_DSR_DCE1, IOMUX_CONFIG_ALT1), + IOMUX_MODE(MX31_PIN_RI_DCE1, IOMUX_CONFIG_ALT1), /* SPI 1 */ MX31_PIN_CSPI2_SCLK__SCLK, MX31_PIN_CSPI2_MOSI__MOSI, @@ -690,6 +687,9 @@ static void __init mx31_3ds_init(void) int ret; imx31_soc_init(); + + /* Configure SPI1 IOMUX */ + mxc_iomux_set_gpr(MUX_PGP_CSPI_BB, true); mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins), "mx31_3ds");