From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from buildserver.ru.mvista.com (unknown [85.21.88.6]) by ozlabs.org (Postfix) with ESMTP id 1B04EDDE0C for ; Thu, 26 Jul 2007 23:58:00 +1000 (EST) Received: from localhost (unknown [10.150.0.9]) by buildserver.ru.mvista.com (Postfix) with ESMTP id BB8FC8814 for ; Thu, 26 Jul 2007 18:57:58 +0500 (SAMST) Date: Thu, 26 Jul 2007 17:57:38 +0400 From: Anton Vorontsov To: linuxppc-dev@ozlabs.org Subject: [RFC][PATCH] MPC832x_RDB: update dts to use spi, register mmc_spi stub Message-ID: <20070726135738.GB5643@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , mmc_spi already tested to work. When it will hit mainline the only change that would be needed is replacing "spidev" by "mmc_spi", and adding trivial platform data to mmc_spi driver. Signed-off-by: Anton Vorontsov --- arch/powerpc/boot/dts/mpc832x_rdb.dts | 33 ++++++++++++++++++++- arch/powerpc/platforms/83xx/mpc832x_rdb.c | 46 +++++++++++++++++++++++++++++ 2 files changed, 78 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/boot/dts/mpc832x_rdb.dts b/arch/powerpc/boot/dts/mpc832x_rdb.dts index 7c4beff..5dcbdd3 100644 --- a/arch/powerpc/boot/dts/mpc832x_rdb.dts +++ b/arch/powerpc/boot/dts/mpc832x_rdb.dts @@ -183,6 +183,21 @@ 1 c 1 0 1 0 /* TX_EN */ 1 d 2 0 1 0>; /* CRS */ }; + spi1pio:spi_pin@01 { + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 3 0 3 0 1 0 /* SPI1 MOSI, I/O */ + 3 1 3 0 1 0 /* SPI1 MISO, I/O */ + 3 2 3 0 1 0 /* SPI1 CLK, I/O */ + 3 3 2 0 1 0>; /* SPI1 SEL, I */ + }; + mmc1pio:mmc_pin@01 { + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 3 d 1 0 0 0 /* !SD_CS */ + 3 e 2 0 0 0 /* SD_INSERT */ + 3 f 2 0 0 0>; /* SD_PROTECT */ + }; }; }; @@ -207,20 +222,36 @@ spi@4c0 { device_type = "spi"; + device-id = <1>; compatible = "fsl_spi"; reg = <4c0 40>; interrupts = <2>; interrupt-parent = <&qeic>; - mode = "cpu"; + mode = "qe"; + sysclk = <5f5e100>; /* 100000000 Hz */ + max-chipselect = <1>; + pio-handle = <&spi1pio>; + + mmc@01 { + device_type = "mmc"; + compatible = "mmc-spi"; + device-id = <1>; + max-speed-hz = ; /* 12500000 Hz */ + chip-select = <0>; + pio-handle = <&mmc1pio>; + }; }; spi@500 { device_type = "spi"; + device-id = <2>; compatible = "fsl_spi"; reg = <500 40>; interrupts = <1>; interrupt-parent = <&qeic>; mode = "cpu"; + sysclk = <5f5e100>; /* 100000000 Hz */ + max_chipselect = <1>; }; ucc@3000 { diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c index b2b28a4..c5463c7 100644 --- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c +++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c @@ -15,6 +15,7 @@ */ #include +#include #include #include @@ -24,6 +25,7 @@ #include #include "mpc83xx.h" +#include "../../sysdev/fsl_soc.h" #undef DEBUG #ifdef DEBUG @@ -32,6 +34,43 @@ #define DBG(fmt...) #endif +extern int par_io_data_set(u8 port, u8 pin, u8 val); + +static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity) +{ + pr_debug("%s %d %d\n", __func__, cs, polarity); + par_io_data_set(3, 13, polarity); +} + +static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity) +{ + pr_debug("%s %d %d\n", __func__, cs, polarity); + par_io_data_set(3, 13, !polarity); +} + +static int __init mpc83xx_spi_devices_init(void) +{ + struct spi_board_info spi_bi = { + .bus_num = 1, + /* + * XXX: This is spidev (spi in userspace) stub, should + * be replaced by "mmc_spi" when mmc_spi will hit mainline. + */ + .modalias = "spidev", + }; + struct device_node *np = NULL; + + np = of_find_compatible_node(np, "mmc", "mmc-spi"); + if (!np) + return 0; + + spi_bi.max_speed_hz = *((u32 *)of_get_property(np, "max-speed-hz", NULL)); + spi_bi.chip_select = *((u32 *)of_get_property(np, "chip-select", NULL)); + + return spi_register_board_info(&spi_bi, 1); +} +device_initcall(mpc83xx_spi_devices_init); + /* ************************************************************************ * * Setup the architecture @@ -62,8 +101,15 @@ static void __init mpc832x_rdb_setup_arch(void) for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) par_io_of_config(np); + for (np = NULL; (np = of_find_node_by_name(np, "spi")) != NULL;) + par_io_of_config(np); + for (np = NULL; (np = of_find_node_by_name(np, "mmc")) != NULL;) + par_io_of_config(np); } #endif /* CONFIG_QUICC_ENGINE */ + + fsl_spi_activate_cs = mpc83xx_spi_activate_cs; + fsl_spi_deactivate_cs = mpc83xx_spi_deactivate_cs; } static struct of_device_id mpc832x_ids[] = { -- 1.5.0.6