Commit graph

22 commits

Author SHA1 Message Date
Jean-Jacques Hiblot
45530e3943 mmc: omap_hsmmc: do not embed struct mmc in struct omap_hsmmc_plat
The area for struct mmc can be allocated dynamically. It greatly reduces
the size of struct omap_hsmmc_plat. This is useful in cases where the board
level code declares one or two struct omap_hsmmc_plat because it doesn't
use the Driver Model.

This saves around 740 bytes for the am335x_evm SPL.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Tested-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-02-26 10:52:15 +09:00
Kishon Vijay Abraham I
2022270c7d ARM: OMAP5: set mmc clock frequency to 192MHz
Now that omap_hsmmc has support for hs200 mode, change the clock
frequency to 192MHz. Also change the REFERENCE CLOCK frequency to
192MHz based on which the internal mmc clock divider is calculated.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:55 +09:00
Jean-Jacques Hiblot
04f9f8be83 mmc: omap_hsmmc: add signal voltage selection support
I/O data lines of UHS SD card operates at 1.8V when in UHS speed
mode (same is true for eMMC in DDR and HS200 modes). Add support
to switch signal voltage to 1.8V in order to support
UHS cards and eMMC HS200 and DDR modes.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:55 +09:00
Kishon Vijay Abraham I
2d28eeda33 mmc: omap_hsmmc: Add support to get pinctrl values and max frequency for different hw revisions
AM572x SR1.1 requires different IODelay values to be used than that used
in AM572x SR2.0. These values are populated in device tree. Add
capability in omap_hsmmc driver to extract IOdelay values for different
silicon revision. The maximum frequency is also reduced when using a ES1.1.
To keep the ability to boot both revsions with the same dtb, those values
can be provided by the platform code.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:55 +09:00
Jean-Jacques Hiblot
2faa1a302b mmc: omap_hsmmc: Workaround for errata id i802
According to errata i802, DCRC error interrupts
(MMCHS_STAT[21] DCRC=0x1) can occur during the tuning procedure.

The DCRC interrupt, occurs when the last tuning block fails
(the last ratio tested). The delay from CRC check until the
interrupt is asserted is bigger than the delay until assertion
of the tuning end flag. Assertion of tuning end flag is what
masks the interrupts. Because of this race, an erroneous DCRC
interrupt occurs.

The suggested  workaround is to disable DCRC interrupts during
the tuning procedure which is implemented here.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:54 +09:00
Jean-Jacques Hiblot
14761caeee mmc: omap_hsmmc: Add tuning support
HS200/SDR104 requires tuning command to be sent to the card. Use
the mmc_send_tuning library function to send the tuning
command and configure the internal DLL.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:54 +09:00
Kishon Vijay Abraham I
9b3fc21837 mmc: omap_hsmmc: Enable DDR mode support
In order to enable DDR mode, Dual Data Rate mode bit has to be set in
MMCHS_CON register. Set it here.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:54 +09:00
Jean-Jacques Hiblot
8fc238bfad mmc: omap_hsmmc: set MMC mode in the UHSMS bit field
Use the timing parameter set in the MMC core to set the
mode in UHSMS  bit field. This is in preparation for
adding HS200 support in omap hsmmc driver.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:54 +09:00
Kishon Vijay Abraham I
b594481709 mmc: omap_hsmmc: add support to set default io voltage
"ti,dual-volt" is used in linux kernel to set the voltage capabilities.
For host controller dt nodes that doesn't have "ti,dual-volt",
it's assumed 1.8v is the io voltage. This is not always true (like in
the case of beagle-x15 where the io lines are connected to 3.3v).
Hence if "no-1-8-v" property is set, io voltage will be set to 3v.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:54 +09:00
Jean-Jacques Hiblot
5baf543e52 mmc: omap_hsmmc: cleanup clock configuration
Add a separate function for starting the clock, stopping the clock and
setting the clock. Starting the clock and stopping the clock can
be used irrespective of setting the clock (For example during iodelay
recalibration).
Also set the clock only if there is a change in frequency.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2018-02-19 16:58:54 +09:00
Kishon Vijay Abraham I
29171dcfaa mmc: omap_hsmmc: Fix incorrect bit operations for disabling a bit
omap_hsmmc driver uses "|" in a couple of places for disabling a bit.
While it's okay to use it in "mmc_reg_out" (since mmc_reg_out has a
_mask_ argument to take care of resetting a bit), it's incorrectly used
for resetting flags in "omap_hsmmc_send_cmd".

Fix it here by using "&= ~()" to reset a bit.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-19 15:49:23 -05:00
Kishon Vijay Abraham I
f0d53e88a6 mmc: omap_hsmmc: Add support for DMA (ADMA2)
The omap hsmmc host controller can have the ADMA2 feature. It brings better
read and write throughput.
On most SOC, the capability is read from the hl_hwinfo register. On OMAP3,
DMA support is compiled out.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-19 15:49:17 -05:00
Jean-Jacques Hiblot
f844d5f4e6 omap: Update the base address of the MMC controllers
Align the base address defined in header files with the base address used
in the DTS. This will facilitate the introduction of the DMA support.

Of all HSMMC users, only omap3 doesn't have the 0x100 reserved region at
the top. This region will be used to determine if the controller supports
DMA transfers

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-18 22:04:21 -05:00
Jean-Jacques Hiblot
741726ae4c Revert "omap_hsmmc: update struct hsmmc to accommodate omap3 from DT"
This reverts commit 46831c1a4c.
This reserved area at the beginning of struct hsmm, will be used later to
support ADMA

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-18 22:04:21 -05:00
Lokesh Vutla
91d3e90668 arm: omap5+: Add board specific ldo powering
It is not necessary all omap5+ based uses the same PMIC
to poweron mmc. So add support for enabling mmc based on board.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-09-11 16:19:35 -04:00
Lokesh Vutla
2558c04906 dm: mmc: omap_hsmmc: Update to support of-platdata
This is to aid platforms that uses OF_PLATDATA.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-05-11 22:21:27 -04:00
Adam Ford
46831c1a4c omap_hsmmc: update struct hsmmc to accommodate omap3 from DT
This patch changes the way DM_MMC calculates offset to the base register of
MMC. Previously this was through an #ifdef but that wasn't necessary for OMAP3.

This patch will now add in the offset to the base address based on the
.compatible flags.

Signed-off-by: Adam Ford <aford173@gmail.com>

V2: Remove ifdef completely and reference offset from the omap_hsmmc_ids table.

V1: Change ifdef to ignore OMAP3
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-09 20:35:35 -04:00
Lokesh Vutla
b4b060066f ARM: OMAP4+: Add support for getting pbias info from board
Palmas driver assumes it is always TPS659xx regulator on all DRA7xx based
boards to enable mmc regulator. This is not true always like in case of
DRA71x-evm. So get this information based on the board.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[trini: Delete omap4_vmmc_pbias_config from omap_hsmmc.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-12-04 13:54:51 -05:00
Mugunthan V N
11e1582506 omap_hsmmc: update struct hsmmc to accomodate base address from DT
Existing driver gets the actual omap hammc base address + 0x100
bytes as the first 0x100 bytes is not used by the driver. But
with DM conversion the base address from DT is different, to
accommodate the offset adding res0[0x100] to struct hsmmc.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2015-10-22 14:22:28 -04:00
Nikita Kiryanov
e3913f56a2 omap_hsmmc: add driver check for write protection
Add check for write protection in omap mmc driver.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Tom Rini <trini@ti.com>
2013-03-08 16:41:13 -05:00
Nikita Kiryanov
e874d5b001 omap_hsmmc: implement driver check for card detection
Implement driver check for card detection.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
2013-03-08 16:41:13 -05:00
Nikita Kiryanov
fa3a69289f omap: consolidate common mmc definitions
The various mmc_host_def.h files are almost identical.
Reduce code duplication by moving the similar definitions to a common
header file.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
2013-03-08 16:41:12 -05:00