[U-Boot] [PATCH v4 0/5] lpc32xx: add legacy NXP BSP drivers

[slemieux.tyco at gmail.com]

From: Sylvain Lemieux <slemieux at tycoint.com>

This series of patches bring the legacy NXP LPC32xx BSP
drivers SLC NAND (hardware ECC), DMA & USB into the latest u-boot.

Refer to each individual patches for details on the change done to
integrate the driver into the latest u-boot.

The legacy BSP patch (u-boot-2009.03_lpc32x0-v1.07.patch.tar.bz2)
was downloaded from the LPCLinux Web site.

The patch adding the LPC32xx MAC and SMSC RMII phy support
should be applied first:
- http://patchwork.ozlabs.org/patch/489100/
- http://patchwork.ozlabs.org/patch/489190/
- http://patchwork.ozlabs.org/patch/491419/
- http://patchwork.ozlabs.org/patch/491420/

The SLC NAND patch should be applied after:
- https://patchwork.ozlabs.org/patch/497308/

The patch modifying the I2C to use the HCLK get API function
should be applied after the SLC NAND patch:
- https://patchwork.ozlabs.org/patch/500511/

The NAND driver was only tested for large page NAND.

Based on the test I did, the NAND SLC hardware ECC support feature
increase the read rate by approx. 242% (raw read: 57%).

Potential test opportunity for small page NAND:
- Since the equivalent of the legacy NXP BSP drivers are available
  (NAND SLC / DMA / Ethernet / USB), it will be nice if somebody
  using the PHY3250 development board can test small pafe NAND.
- The remaining porting work to the latest u-boot include the 
  migration of the board & configuration files.

Changes from v3 to v4:
* Addressed Marek's comments on LPC32xx DMA driver:
  - updated multiline comments style.
  - use "u32" instead of "uint32_t".
  - fixed unbounded loop.
* Addressed Marek's comments on LPC32xx USB driver:
  - use same "wait_for_bit()" implementation as
    drivers/usb/host/dwc2.c
  - use a const variable to define a mask to make
    the code more clear to read.
* Fixed legacy USB driver; use "otg_clk_sts" register
  to verify clock status instead of control register.

Changes from v2 to v3:
* As per feedback on mailing list from Vladimir,
  - add warning when DMA and SPL build option are selected.
  - add another DMA specific read & write buffer functions.
* Addressed Marek's comments on LPC32xx NAND & DMA driver:
  - use defined in header file instead of local definition.
  - remove for loop and use "ffz()".
  - removed typecast and update type, when possible.
* As per discussion on mailing list with Vladimir & Marek,
  updated conditional compile option (DMA only) to build
  the original NAND SLC code using software ECC.
* Provide define to assign next DMA linked list item address
  to removed typecast in DMA client (ex. NAND SLC).
* Re-organized the conditional compile code inside
  "board_nand_init()" - DMA vs. non-DMA initialization.
* added original NAND source code credit.
* Addressed Marek's comments on LPC32xx USB driver:
  - use "get_timer()" to handle timeout (usbpll_setup).
  - submit i2c driver update into a separate patch.
  - use "u32" for 4 bytes registers definition.
  - Move pin mux code to setup file (i.e. "device.c").
* Updated ISP1301 register definition (set & clear) instead
  of using an extra mask for the clear address.

Changes from v1 to v2:
* Moved the DMA patch as the first patch of the series
  and the NAND SLC patch as thesecond one.
* As per discussion on mailing list with Vladimir,
  incorporate NAND SLC hardware ECC support into the following
  NAND SLC patch: https://patchwork.ozlabs.org/patch/497308/
* As per discussion on mailing list with Vladimir & Albert,
  add conditional compile option to build the original
  NAND SLC code using software ECC for SPL build.
* Moved ECC layout for small page NAND in a separate patch.
* Addressed Marek's comments on LPC32xx USB driver:
  - use "get_timer()" to handle timeout.
  - Split USB and I2C driver.
* Updated LPC32xx I2C driver to support the I2C that is part
  of the USB module.
* Removed ISP1301 USB transceiver I2C registers definition
  that are not used.
* For the USB driver, use "cpu" initialization & stop
  functions API instead of the "board" API.

Note:
I am sending the patches using <slemieux.tyco at gmail.com>,
until I can submit patch using my regular e-mail <slemieux at tycoint.com>.

Sylvain Lemieux (5):
  dma: lpc32xx: add DMA driver
  nand: lpc32xx: add hardware ECC support
  nand: lpc32xx: add ECC layout for small page NAND
  i2c: lpc32xx: add support for OTG I2C
  usb: lpc32xx: add host USB driver

 arch/arm/cpu/arm926ejs/lpc32xx/devices.c      |  12 +
 arch/arm/include/asm/arch-lpc32xx/clk.h       |  15 +
 arch/arm/include/asm/arch-lpc32xx/dma.h       |  44 +++
 arch/arm/include/asm/arch-lpc32xx/sys_proto.h |   2 +
 drivers/dma/Makefile                          |   1 +
 drivers/dma/lpc32xx_dma.c                     | 157 +++++++++++
 drivers/i2c/lpc32xx_i2c.c                     |  20 +-
 drivers/mtd/nand/lpc32xx_nand_slc.c           | 385 +++++++++++++++++++++++++-
 drivers/usb/host/Makefile                     |   1 +
 drivers/usb/host/ohci-lpc32xx.c               | 242 ++++++++++++++++
 10 files changed, 871 insertions(+), 8 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-lpc32xx/dma.h
 create mode 100644 drivers/dma/lpc32xx_dma.c
 create mode 100644 drivers/usb/host/ohci-lpc32xx.c

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1.8.3.1