Dll reset is needed only for ZynqMP platforms, add condition in tuning
to call arasan_zynqmp_dll_reset() just for ZynqMP platforms.
On other platforms like Versal NET, If this condition is not added, we
see PLM error messages when dll reset smc is called.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/d673ff3bdc5c236a7f0403c920e719684abd6059.1688991117.git.michal.simek@amd.com
The fdt_addr_t and phys_addr_t size have been decoupled. A 32bit CPU
can expect 64-bit data from the device tree parser, so use
dev_read_addr_ptr instead of the dev_read_addr function in the
various files in the drivers directory that cast to a pointer.
As we are there also streamline the error response to -EINVAL on return.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
There are missing Kconfig dependencies in the code which is using
firmware interface.
The commit 71efd45a5f ("arm64: zynqmp: Change firmware dependency")
add option to also disable ZYNQMP_FIRMWARE. But not all Kconfig
dependencies were properly described and also sdhci and gem drivers
didn't protect the code properly.
So, add the missing ZYNQMP_FIRMWARE dependencies.
Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapally@amd.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230201095553.11219-1-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add support for HS400 in mode2timing array.
Add a quirk for Versal NET platform to indicate that HS400 is supported
through bit63 of capability register.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Add support for eMMC 5.1 for Versal NET platform
- Add new compatible string(xlnx,versal-net-5.1-emmc).
- Add CONFIG_ARCH_VERSAL_NET condition wherever required.
- Add DLL and Delay Chain mode support
- Add input and output tap delays for eMMC.
- Add Strobe select tap for HS400 mode.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
tuning_loop_counter is of char type, which is not capable of handling
the entire data range of this variable. This is pointed by below sparse
warning. Change datatype to int to fix this.
warning: comparison is always false due to limited range of data type.
Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapally@amd.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230120053617.32463-5-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Firmware calls need node_id which is basically "power-domains" id.
At present static values are used based on the "device_id" property of
dt.
Instead of this, read "power-domains" id from dt and use it. Add a
element called node_id in priv structure and read it from dt. Replace
static node_id with this priv->node_id across the driver.
Since "device_id" is not used anywhere else simply remove it.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20220930092548.18453-3-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
In Versal platform power domain node_id is bigger than u8, hence
change prototype to u32 to accommodate. Change u8 to u32 in the function
prototypes that use node_id and remove casting to u32 from
xilinx_pm_request() call parameters.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20220930092548.18453-2-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Timing macro's are wrong for MMC_HS_52 and MMC_DDR_52. Fix it with
correct values of MMC_TIMING_MMC_HS and MMC_TIMING_MMC_DDR52 respectively.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1656319965-12124-1-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
zynqmp_pm_is_function_supported() which checks feature support on som,
which is implemented in firmware_zynqmp.c driver. As mini configuration
does not use firmware driver, so create a weak function to avoid
compilation error on zynqmp mini configuration.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Acked-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/c60655a509956b8fc3a81671a7dc51157f3973db.1651048030.git.michal.simek@xilinx.com
The DLL mode supported SD reference clocks are 50 MHz, 100 MHz and
200 MHz. When user select SD frequency as 200MHz in the design, the
actual frequency is going to come around ~187MHz (<= 200MHz considering
the parent clock and divisor selection). We need to set SDx_BASECLK as
200 in this case, setting 187 will result in tuning failures in mmc.
Set SDx_BASECLK to exact value of 200, 100 or 50 based on the frequency
range.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Link: https://lore.kernel.org/r/6c1e5eeeedd2864a0c85e6b409d182031d8c6c1a.1648210268.git.michal.simek@xilinx.com
Add support for dynamic configuration which will takes care of
configuring the SD secure space configuration registers using firmware
APIs, performing SD reset assert and deassert.
High level sequence:
- Check for the PM dynamic configuration support, if no error proceed
with SD dynamic configurations(next steps) otherwise skip the dynamic
configuration.
- Put the SD Controller in reset.
- Configure SD Fixed configurations.
- Configure the SD Slot Type.
- Configure the BASE_CLOCK.
- Configure the 8-bit support.
- Bring the SD Controller out of reset.
In the above steps, apart from the Fixed configurations, remaining all
configurations are dynamic and they will be read from devicetree.
And also remove hardcoded secure register writes, as dynamic sd config
support is added.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/030a3ec041ff3efebd574b4d2b477ad85f12cbce.1645626962.git.michal.simek@xilinx.com
In the workaround added with 'commit b6f44082d5 ("mmc: zynq_sdhci: Wait
till sd card detect state is stable")' the timeout variable has post
decrement. Whenever timeout happens, this post decrement is making
timeout=0xffffffff, so timeout error print and return statement are
never reached. Fix it by decrementing it inside the while loop.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/61fc1160ada0dd622cd29e381a74af7bf3d9a200.1645625609.git.michal.simek@xilinx.com
Mini emmc does not use any pmufw and ZYNQMP_FIRMWARE is disabled.
xilinx_pm_request() will not be compiled and causes undefined reference to
`xilinx_pm_request' error. So add a weak function in zynq_sdhci.c file.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1633086518-32636-1-git-send-email-t.karthik.reddy@xilinx.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Since set_control_reg is available in sdhci.c, use it and remove
arasan_sdhci_set_control_reg().
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
As per SD spec when SD host controller is reset, it takes 1000msec
to detect the card state. In case, if we enable the sd bus voltage &
card detect state is not stable, then host controller will disable
the sd bus voltage.
In case of warm/subsystem reboot, due to unstable card detect state
host controller is disabling the sd bus voltage to sd card causing
sd card timeout error. So we wait for a maximum of 1000msec to get
the card detect state stable before we enable the sd bus voltage.
This current fix is workaround for now, this needs to be analysed
further. Zynqmp platform should behave the same as Versal, but we
did not encounter this issue as of now. So we are fixing it for
Versal only.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Move tapdelay function calls to zynq_sdhci.c and make them static
inline. zynqmp_tap_delay.h has function prototypes for the functions
defined in tap_delays.c, which will not be needed anymore.
Remove tap_delays.c and zynqmp_tap_delay.h files.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Currently xilinx sdhci driver is using zynqmp_mmio_write() to set
tapdelay values and DLL resets. Continue to use this for SPL and mini
U-Boot where U-Boot will be executed at EL3 level.
Use firmware call xilinx_pm_request() using appropriate arguments to
set input/output tapdelays and also for DLL resets in regular flow(EL2).
Host driver should explicitly request DLL reset before ITAP (assert DLL)
and after OTAP (release DLL) to avoid issues in some cases. Also handle
error return where possible.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Change return type of arasan_sdhci_set_tapdelay() to int, to facilitate
returning errors. Get return values from input and output set clock phase
functions inside arasan_sdhci_set_tapdelay() and return those errors.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
All these variables/structure are local and should be static.
Issues are reported by sparse:
drivers/mmc/zynq_sdhci.c:49:11: warning: symbol 'zynqmp_iclk_phases' was not declared. Should it be static?
drivers/mmc/zynq_sdhci.c:50:11: warning: symbol 'zynqmp_oclk_phases' was not declared. Should it be static?
drivers/mmc/zynq_sdhci.c:53:11: warning: symbol 'versal_iclk_phases' was not declared. Should it be static?
drivers/mmc/zynq_sdhci.c:54:11: warning: symbol 'versal_oclk_phases' was not declared. Should it be static?
drivers/mmc/zynq_sdhci.c:546:24: warning: symbol 'arasan_ops' was not declared. Should it be static?
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Fix these kernel doc warnings:
drivers/mmc/zynq_sdhci.c:181: warning: contents before sections
drivers/mmc/zynq_sdhci.c:236: warning: contents before sections
drivers/mmc/zynq_sdhci.c:291: warning: contents before sections
drivers/mmc/zynq_sdhci.c:297: warning: Function parameter or member 'degrees' not described in 'sdhci_versal_sdcardclk_set_phase'
drivers/mmc/zynq_sdhci.c:354: warning: contents before sections
drivers/mmc/zynq_sdhci.c:360: warning: Function parameter or member 'degrees' not described in 'sdhci_versal_sampleclk_set_phase'
drivers/mmc/zynq_sdhci.c:467: warning: contents before sections
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Split arasan_zynqmp_set_tapdelay() to handle input and output tapdelays
separately. This is required to handle zero values for ITAP and OTAP
values. If we dont split, we will have to remove the if() in the
function, which makes ITAP values to be overwritten when OTAP values are
called to set and vice-versa.
Restrict tap_delay value calculated to max allowed 8 bits for ITAP and 6
bits for OTAP for ZynqMP.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Restrict tap_delay value to the allowed size(8bits for itap and 6 bits
for otap) before writing to the tap delay register.
Clear ITAP and OTAP delay bits before updating with the new tap value
for Versal platform.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Allow configuring ITAP and OTAP values with zero to avoid failures in
some cases (one of them is SD boot mode). Legacy, SDR12 modes require
to program the ITAP and OTAP values as zero, whereas for SDR50 and SDR104
modes ITAP value is zero.
In SD boot mode firmware configures the SD ITAP and OTAP values and
in this case u-boot has to re-configure required tap values(including zero)
based on the operating mode.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
set_phase() functions are not modifying the ret value and returning
the same uninitialized ret, return 0 instead.
Keep the return type as int to return errors when the tapdelay's are
set via xilinx_pm_request() in future.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
A lot of Xilinx drivers are checking -ENOSYS which means that clock driver
doesn't have enable function. Remove this checking from drivers and create
dummy enable function as was done for clk_fixed_rate driver by
commit 6bf6d81c11 ("clk: fixed_rate: add dummy enable() function").
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This name is far too long. Rename it to remove the 'data' bits. This makes
it consistent with the platdata->plat rename.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).
Rename some of the latter variables to end with 'plat' for consistency.
Signed-off-by: Simon Glass <sjg@chromium.org>
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.
Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fix the condition to set UHS timings for speeds upto HS200.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Define default values for input and output clock phase delays for
Versal. Also define functions for setting tapdelays based on these
clock phase delays.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Define and use functions for setting input and output tapdelays
based on clk phase delays.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Define input and output clock phase delays with pre-defined values.
Define arasan_sdhci_clk_data type structure and add it to priv
structure and store these clock phase delays in it.
Read input and output clock phase delays from dt. If these values are
not passed through dt, use pre-defined values.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Just group macros below headers. Other patches will be using this location
too.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Define timing macro's for all the available speeds of mmc. This is
done similar to linux. Replace speed macro's used with these new timing
macro's wherever applicable.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This reverts commit 942b5fc032.
This is partial revert of the above commit.
mmc_of_parse() is reading no-1-8-v from device tree and if set,
it is clearing the UHS speed capabilities of cfg->host_caps.
cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 |
MMC_MODE_HS400 | MMC_MODE_HS400_ES);
This is still missing to clear UHS speeds like SDHCI_SUPPORT_SDR104,
SDHCI_SUPPORT_SDR50 and SDHCI_SUPPORT_DDR50.
Even if we clear the flags SDHCI_SUPPORT_XXX in mmc_of_parse(),
these speed flags are getting set again in cfg->host_caps in
sdhci_setup_cfg().
The reason for this is, SDHCI_SUPPORT_XXX flags are cleared
only if controller is not capable of supporting MMC_VDD_165_195 volts.
if (caps & SDHCI_CAN_VDD_180)
cfg->voltages |= MMC_VDD_165_195;
if (!(cfg->voltages & MMC_VDD_165_195))
caps_1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
SDHCI_SUPPORT_DDR50);
It means "no-1-8-v", which is read from DT is not coming in to effect.
So it is better we keep the host quirks(SDHCI_QUIRK_NO_1_8_V) to
clear UHS speeds based on no-1-8-v from device tree.
Hence revert the functionality related to no-1-8-v only, rest is fine
in the patch.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
DT binding is saying that default value is 0 not -1 that's why fix it.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
s/xlnx,mio_bank/xlnx,mio-bank/g
DT binding is describing mio-bank not mio_bank that's why fix all DTSes and
also driver itself.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Currently, the entry "bus-width = <8>" in the ZynqMP's sdhci nodes
is not evaluated. This results in the bus width staying at its default
value (4 bit in HS200 mode).
Fix this by calling mmc_of_parse. This function also checks for the
"no-1-8-v" and "max-frequency" entries. Remove the handling of those
nodes from this driver.
Signed-off-by: Benedikt Grassl <Benedikt.Grassl@rohde-schwarz.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
MMC_LEGACY & SD_LEGACY are not differentiated timings in the spec and
don't have any meaningful differences. Therefore, get rid of all
references to SD_LEGACY and use MMC_LEGACY to mean both of them.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
