Commit graph

58600 commits

Author SHA1 Message Date
Faiz Abbas
3a1a0dfc39 arm64: dts: k3: Sync sdhci0 node from kernel and change driver name
Sync the sdhci0 node from kernel. This changes the compatible that is
required to be there in the driver. Change the same for the SD card node
which is not yet supported in kernel. This also syncs the main_pmx0 node
as a side effect.

Also change the name of the driver to match the compatible in kernel.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Tom Rini
0e80dda32c Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-sunxi
- Beelink-x2 STB support (Marcus)
- H6 DDR3, LPDDR3 changes (Andre, Jernej)
- H6 pin controller, USB PHY (Andre)
2019-07-16 11:19:31 -04:00
Andre Przywara
f96238e253 sunxi: H6: Enable USB for existing boards
So far USB was not enabled for the Allwinner H6 boards, as the PHY
driver was not ready and the clock gates were missing. Since this is now
fixed, let's add the PHY and the OHCI/EHCI drivers to the build, for
all existing H6 boards.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
35fa673e0e sunxi: phy: Add USB PHY support for Allwinner H6
The USB PHY used in the Allwinner H6 SoC has some pecularities (as usual),
which require a small addition to the USB PHY driver:
In this case the second PHY is PHY3, not PHY1, so we need to skip number
1 and 2 in the code. Just use the respective code from Linux for that.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
106c1300a5 sunxi: clocks: Add H6 USB clock gates and resets
To enable USB support in U-Boot, add the required clock and reset gates
to the H6 clock driver. Once enabled, the generic EHCI/OCHI drivers will
pick them up from there automatically.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
0d3c77f5c3 sunxi: gpio: Enable support for H6 pin controller
The Allwinner H6 pin controller is not really special, at least not when
it comes to normal GPIO operation.

Add the H6 compatible strings to the list of recognised strings, to make
GPIOs work for H6 boards.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
10cfbaabc1 sunxi: move SUNXI_GPIO to Kconfig
Probably for no particular reason SUNXI_GPIO was still defined the "old
way", in header files only.

Introduce SUNXI_GPIO to the Kconfig file in drivers/gpio to remove
another line from our dreadful config_whitelist.txt.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Jernej Skrabec
0824384bfb sunxi: H6: Add DDR3 DRAM delay values
Add some basic line delay values to be used with DDR3 DRAM chips on
some H6 TV boxes.
Taken from a register dump after boot0 initialised the DRAM.
Put them as the default delay values for DDR3 DRAM until we know better.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:14 +05:30
Andre Przywara
7656d3982a sunxi: H6: Add DDR3-1333 timings
Add a routine to program the timing parameters for DDR3-1333 DRAM chips
connected to the H6 DRAM controller.

The values were gathered from doing back-calculations from a register
dump, trying to match them up with the official JEDEC DDDR3 spec.
If in doubt, the register dump values were taken for now, but the JEDEC
recommendation were added as a comment.

Many thanks to Jernej for contributing fixes!

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:04 +05:30
Andre Przywara
75a8a641f3 sunxi: H6: Add DDR3 support to DRAM controller driver
At the moment the H6 DRAM driver only supports LPDDR3 DRAM.

Extend the driver to cover DDR3 DRAM as well.

The changes are partly motivated by looking at the ZynqMP register
documentation, partly by looking at register dumps after boot0/libdram
has initialised the controller.

Many thanks to Jernej for contributing some fixes!

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:09:41 +05:30
Andre Przywara
770b85a418 sunxi: H6: move LPDDR3 timing definition into separate file
Currently the H6 DRAM driver only supports one kind of LPDDR3 DRAM.
Split the timing parameters for this LPDDR3 configuration  into a
separate file, to allow selecting an alternative later at compile time
(as the sunxi-dw driver does).

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:09:31 +05:30
Andre Przywara
65f80f5804 sunxi: H6: DRAM: follow recommended PHY init algorithm
The DRAM controller manual suggests to first program the PHY
initialisation parameters to the PHY_PIR register, and then set bit 0 to
trigger the initialisation. This is also used in boot0.

Follow this recommendation by setting bit 0 in a separate step.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:09:19 +05:30
Andre Przywara
1a1d1df384 sunxi: H6: DRAM: avoid memcpy() on MMIO registers
Using memcpy() is, however tempting, not a good idea: It depends on the
specific implementation of memcpy, also lacks barriers. In this
particular case the first registers were written using 64-bit writes,
and the last register using four separate single-byte writes.

Replace the memcpy with a proper loop using the writel() accessor.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:09:06 +05:30
Tom Rini
9c94e0a644 Merge branch 'master' of git://git.denx.de/u-boot-net 2019-07-15 18:56:24 -04:00
Radu Pirea
0dc97fc3d8 net: macb: Add support for 1000-baseX
Macb can be used with Xilinx PCS/PMA PHY in fpga which is a 1000-baseX
phy(lpa 0x41e0). This patch adds checks for LPA_1000XFULL and
LPA_1000XHALF bits.

Signed-off-by: Radu Pirea <radu_nicolae.pirea@upb.ro>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:26 -05:00
Radu Pirea
1b0c9914cc net: macb: Fixed reading MII_LPA register
If macb is gem and is gigabit capable, lpa value is not read from
the right register(MII_LPA) and is read from MII_STAT1000. This patch
fixes reading of the lpa value.

Signed-off-by: Radu Pirea <radu_nicolae.pirea@upb.ro>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:26 -05:00
Grygorii Strashko
c558c50dbb configs: am65x_evm_a53: enable networking
Enable TI K3 AM65x CPSW NUSS driver.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-15 13:32:26 -05:00
Grygorii Strashko
6f2929d8b7 arm64: dts: k3-am654-base-board: add mcu cpsw nuss pinmux and phy defs
Add mcu cpsw nuss pinmux and phy defs required by cpsw.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:26 -05:00
Grygorii Strashko
5195c10fbb arm64: dts: ti: k3-am65: add mcu cpsw node
Add mcu cpsw and its components along with scm_conf node
to have ethernet functional.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Keerthy
9d0dca1199 net: ethernet: ti: Introduce am654 gigabit eth switch subsystem driver
Add new driver for the TI AM65x SoC Gigabit Ethernet Switch subsystem (CPSW
NUSS). It has two ports and provides Ethernet packet communication for the
device and can be configured as an Ethernet switch. CPSW NUSS features: the
Reduced Gigabit Media Independent Interface (RGMII), Reduced Media
Independent Interface (RMII), and the Management Data Input/Output (MDIO)
interface for physical layer device (PHY) management. The TI AM65x SoC has
integrated two-port Gigabit Ethernet Switch subsystem into device MCU
domain named MCU_CPSW0. One Ethernet port (port 1) with selectable RGMII
and RMII interfaces and an internal Communications Port Programming
Interface (CPPI) port (Host port 0).

Host Port 0 CPPI Packet Streaming Interface interface supports 8 TX
channels and on RX channels operating by TI am654 NAVSS Unified DMA
Peripheral Root Complex (UDMA-P) controller.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Keerthy
45e8c055cc driver: net: ti: cpsw-mdio: use phys_addr_t for mdio_base addr
Use phys_addr_t for mdio_base address to avoid build
warnings on arm64 and dra7. Cast it to uintprt_t before
assigning to regs.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Yinbo Zhu
4db6e790ba net: phy: cortina: Use block layer to read from mmc
This patch is to use block layer to read from mmc in cortina

Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Horatiu Vultur
61243678c2 net: mscc: refactor mscc_miim
Because all MSCC SoC use the same MDIO bus, put the implementation in
one common file(mscc_miim) and make all the other MSCC network drivers to
use these functions.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Alex Marginean
ec9594a50f test: dm: add MDIO test
A very simple test for DM_MDIO, mimicks a register write/read through the
sandbox bus to a dummy PHY.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Alex Marginean
c3452b50c3 net: introduce MDIO DM class for MDIO devices
Adds UCLASS_MDIO DM class supporting MDIO buses that are probed as
stand-alone devices.  Useful in particular for systems that support
DM_ETH and have a stand-alone MDIO hardware block shared by multiple
Ethernet interfaces.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Horatiu Vultur
149468699e net: mscc: serval: Remove delay when serdes is configured
When serdes configuration was written in hardware there was a delay
of 100ms to be sure that configuration was written. But the delay is not
needed because already the function serdes_write it is checking that the
operation finished.

Therefore remove the mdelay. This improves the speed of configuring the
network driver.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Trent Piepho
2529dea893 net: phy: ti: Fix clock output DT property
The code block reading the DT property for the clock output control was
before the phy's DT node pointer was set, so it could never work.  Move
it after the node pointer is set.

Also store the unsigned 32-bit property into an unsigned value, not a
signed value, as the former will cause a problem if value overflows.
For instance, if one were to add 0xffffffff as a code to mean the clock
output should be turned off.

Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Janine Hagemann <j.hagemann@phytec.de>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Trent Piepho
c2df9b49ce net: phy: ti: Use default values for tx/rx delay and fifo size
When not using DM_ETH, these PHY settings are programmed with default
values hardcoded into the driver.  When using DM_ETH, they should come
from the device tree.  However, if the device tree does not have the
properties, the driver will silent use -1.  Which is entirely out of
range, programs nonsense into the PHY's registers, and does not work.

Change this to use the same defaults as non-DM_ETH if the device tree is
lacking the properties.

As an alternative, the kernel driver for the phy will display an error
message and fail if the device tree is lacking.

Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Janine Hagemann <j.hagemann@phytec.de>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Trent Piepho
9563786831 cmd: mii: Add the standard 1000BASE-T registers
These are standard across gigabit phys.  These mostly extend the
auto-negotiation information with gigabit fields.

Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Trent Piepho
4ef3231b63 cmd: mii: Refactor some of the MII reg dump code
Share the code that prints out a register field with the function that
prints out the "special" fields.

There were two arrays the register dump list, one with reg number and
name, another with a pointer to the field table and the table size.
These two arrays had have each entry match what register is referred to.
Combine them into just one table.  Now they can't not match and there is
just one table.

Add some missing consts to pointers to string literals.

The dump code was ignoring the regno field in the description table and
assuming register 0 was at index 0, etc.  Have it use the field.

Change reg > max+1 into reg >= max, which doesn't fail if max+1 could
overflow, besides just making more sense.

Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Tom Rini
6674dc77c2 Merge tag 'mmc-2019-7-15' of https://gitlab.denx.de/u-boot/custodians/u-boot-mmc
- mmc spi driver model support
- drop mmc_spi command
- enhanced Strobe mmc HS400 support
- minor mmc bug/fixes and optimization
- omap hsmmc and mvbeu update
- sdhci card detect support
2019-07-15 09:42:41 -04:00
Marcus Cooper
a9e19b8ff7 sun8i: h3: Add support for the Beelink-x2 STB
The Beelink X2 is an STB based on the Allwinner H3 SoC with a uSD slot,
2 USB ports( 1 * USB-2 Host, 1 USB OTG), a 10/100M ethernet port using the
SoC's integrated PHY, Wifi via an sdio wifi chip, HDMI, an IR receiver, a
dual colour LED and an optical S/PDIF connector.

Linux commit details about the sun8i-h3-beelink-x2.dts sync:
"ARM: dts: sun8i: h3: Add ethernet0 alias to Beelink X2"
(sha1: cc4bddade114b696ab27c1a77cfc7040151306da)

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-15 12:25:32 +05:30
Andre Przywara
9340d8fe8b sunxi: move CONFIG_SPL_TEXT_BASE from *_defconfig to Kconfig
The choice of the SPL_TEXT_BASE is not really a decision that should be
specified by each board's defconfig, as this setting is actually
dictated by the SoC's memory map and the BootROM behaviour.

To make this obvious and reduce the clutter in the defconfig files,
let's specify the SoC constraints in the Kconfig stanza.
This allows us to remove these lines from the defconfig files again.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-15 12:25:32 +05:30
Peng Fan
356f782c6e mmc: fsl_esdhc_imx: enlarge mmc timeout
Flash system partition with fastboot will earse the partition firstly
The 600ms timeout will fail on some SD Card. Enlarge it to 5s to make
it works for most of sdcard

Cc: guoyin.chen <guoyin.chen@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-15 10:30:09 +08:00
Peng Fan
609ba125c5 mmc: fsl_esdhc_imx: add i.MX8QM compatible
Add i.MX8QM compatible and soc data, the soc data is following Linux
i.MX SDHC driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-15 10:30:09 +08:00
Peng Fan
e9c2255267 mmc: fsl_esdhc_imx: add HS400 Enhanced strobe support
Implement set_enhanced_strobe hook for fsl_esdhc_imx,
,in esdhc_set_timing and esdhc_change_pinstate, also handle HS400_ES.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-15 10:30:09 +08:00
Peng Fan
b0155ac63c mmc: fsl_esdhc_imx: use mmc_of_parse to set host_caps
Use mmc_of_parse to set host_caps.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-15 10:30:09 +08:00
Peng Fan
479a8dd6dc mmc: Parse no-1-8-v DT property
Parse no-1-8-v DT

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>
2019-07-15 10:30:08 +08:00
Peng Fan
b0fc3127bd mmc: Parse HS400 Enhanced strobe DT properties
Add HS400 Enhanced strobe properties parsing support to mmc_of_parse().

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>
2019-07-15 10:30:08 +08:00
Peng Fan
44acd49248 mmc: support hs400 enhanced strobe mode
eMMC 5.1+ supports HS400 Enhances Strobe mode without the need for
tuning procedure.
The flow is as following:
 - set HS_TIMIMG (Highspeed)
 - Host change freq to <= 52Mhz
 - set the bus width to Enhanced strobe and DDR8Bit(CMD6),
   EXT_CSD[183] = 0x86 instead of 0x80
 - set HS_TIMING to 0x3 (HS400)
 - Host change freq to <= 200Mhz
 - Host select HS400 enhanced strobe complete

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-15 10:30:08 +08:00
Ye Li
8277171663 mmc: fsl_esdhc_imx: fix config check issue when building in SPL
Should use CONFIG_IS_ENABLED not IS_ENABLED for clock and regulator drivers,
CONFIG_IS_ENABLED will check the CONFIG_SPL_CLK and CONFIG_SPL_DM_REGULATOR
when building SPL.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-07-15 10:30:08 +08:00
Anup Patel
a897269c93 cmd: Remove mmc_spi command
The mmc_spi command was added to manually setup MMC over SPI bus
using command. This was required by the legacy non-DM MMC_SPI driver.

With DM based MMC_SPI driver in-place, we can now use all general
storge commands and mmc command for MMC over SPI bus hence we remove
the mmc_spi command all it's references.

Suggested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-07-15 10:30:08 +08:00
Bhargav Shah
05e35d4297 mmc: mmc_spi: Re-write driver using DM framework
This patch rewrites MMC SPI driver using U-Boot DM
framework and get it's working on SiFive Unleashed
board.

Signed-off-by: Bhargav Shah <bhargavshah1988@gmail.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-07-15 10:16:49 +08:00
Anup Patel
f49ff79935 mmc: skip select_mode_and_width for MMC SPI host
The MMC mode and width are fixed for MMC SPI host hence we skip
sd_select_mode_and_width() and mmc_select_mode_and_width() for
MMC SPI host.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-07-15 10:16:49 +08:00
Jean-Jacques Hiblot
0538477c53 mmc: retry a few times if a partition switch failed
This operation may fail. Retry it a few times before giving up and report
a failure.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-07-15 10:16:49 +08:00
Jean-Jacques Hiblot
9bc5666c8a mmc: do not change mode when accessing a boot partition
Accessing the boot partition had been error prone with HS200 and HS400 and
was disabled. The driver first switched to a lesser mode and then switched
the partition access. It was mostly due to a bad handling of the switch and
has been fixed, so let's remove this 'feature'

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-07-15 10:16:49 +08:00
Jean-Jacques Hiblot
bb98b8c5c0 mmc: During a switch, poll on dat0 if available and check the final status
The switch operation can sometimes make the bus unreliable, in that case
the send_status parameter should be false to indicate not to poll using
CMD13. If polling on dat0 is possible, we should use it to detect the end
of the operation.
At the end of the operation it is safe to use CMD13 to get the status of
the card. It is important to do so because the operation may have failed.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-07-15 10:16:49 +08:00
Jean-Jacques Hiblot
513e00b64e mmc: When switching partition, use the timeout specified in the ext_csd
The e-MMC spec allows the e-MMC to specify a timeout for the partition
switch command. It can take up to 2550 ms. There is no lower limit to this
value in the spec, but do as the the linux driver does and force it to be
at least 300ms.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-07-15 10:16:49 +08:00
Jean-Jacques Hiblot
39320c537d mmc: use the generic timeout for cmd6 (SWITCH) provided in the ext_csd
Starting with rev 4.5, the eMMC can define a generic timeout for the
SWITCH command.

Following Linux Kernel code, the timeout also changed from 1000 -> 500

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-07-15 10:16:49 +08:00
Jean-Jacques Hiblot
cd0b80ec9c mmc: if possible, poll the busy state using DAT0
Using the DAT0 line as a rdy/busy line is an alternative to reading the
status register of the card. It especially useful in situation where the
bus is not in a good shape, like when modes are switched.
This is also how the linux driver behaves.

Note of warning: As per the specification, while polling on DAT0 the CLK
must not turned off: "[...] Without a clock edge the Device (unless
previously disconnected by a deselect command (CMD7)) will force the DAT0
line down, forever. [...]"

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-07-15 10:16:49 +08:00