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Subject: docs: memory-devices: convert ti-emif.txt to ReST Author: Mauro Carvalho Chehab <[email protected]> Date: Mon Apr 15 18:39:27 2019 -0300 Prepare this file to be moved to a kernel book by converting it to ReST format and renaming it to ti-emif.rst. While this is not part of any book, mark it as :orphan:, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <[email protected]> Documentation/memory-devices/ti-emif.rst | 64 ++++++++++++++++++++++++++++++++ Documentation/memory-devices/ti-emif.txt | 57 ---------------------------- 2 files changed, 64 insertions(+), 57 deletions(-) --- diff --git a/Documentation/memory-devices/ti-emif.rst b/Documentation/memory-devices/ti-emif.rst new file mode 100644 index 000000000000..c9242294e63c --- /dev/null +++ b/Documentation/memory-devices/ti-emif.rst @@ -0,0 +1,64 @@ +:orphan: + +=============================== +TI EMIF SDRAM Controller Driver +=============================== + +Author +====== +Aneesh V <[email protected]> + +Location +======== +driver/memory/emif.c + +Supported SoCs: +=============== +TI OMAP44xx +TI OMAP54xx + +Menuconfig option: +================== +Device Drivers + Memory devices + Texas Instruments EMIF driver + +Description +=========== +This driver is for the EMIF module available in Texas Instruments +SoCs. EMIF is an SDRAM controller that, based on its revision, +supports one or more of DDR2, DDR3, and LPDDR2 SDRAM protocols. +This driver takes care of only LPDDR2 memories presently. The +functions of the driver includes re-configuring AC timing +parameters and other settings during frequency, voltage and +temperature changes + +Platform Data (see include/linux/platform_data/emif_plat.h) +=========================================================== +DDR device details and other board dependent and SoC dependent +information can be passed through platform data (struct emif_platform_data) + +- DDR device details: 'struct ddr_device_info' +- Device AC timings: 'struct lpddr2_timings' and 'struct lpddr2_min_tck' +- Custom configurations: customizable policy options through + 'struct emif_custom_configs' +- IP revision +- PHY type + +Interface to the external world +=============================== +EMIF driver registers notifiers for voltage and frequency changes +affecting EMIF and takes appropriate actions when these are invoked. + +- freq_pre_notify_handling() +- freq_post_notify_handling() +- volt_notify_handling() + +Debugfs +======= +The driver creates two debugfs entries per device. + +- regcache_dump : dump of register values calculated and saved for all + frequencies used so far. +- mr4 : last polled value of MR4 register in the LPDDR2 device. MR4 + indicates the current temperature level of the device. diff --git a/Documentation/memory-devices/ti-emif.txt b/Documentation/memory-devices/ti-emif.txt deleted file mode 100644 index f4ad9a7d0f4b..000000000000 --- a/Documentation/memory-devices/ti-emif.txt +++ /dev/null @@ -1,57 +0,0 @@ -TI EMIF SDRAM Controller Driver: - -Author -======== -Aneesh V <[email protected]> - -Location -============ -driver/memory/emif.c - -Supported SoCs: -=================== -TI OMAP44xx -TI OMAP54xx - -Menuconfig option: -========================== -Device Drivers - Memory devices - Texas Instruments EMIF driver - -Description -=========== -This driver is for the EMIF module available in Texas Instruments -SoCs. EMIF is an SDRAM controller that, based on its revision, -supports one or more of DDR2, DDR3, and LPDDR2 SDRAM protocols. -This driver takes care of only LPDDR2 memories presently. The -functions of the driver includes re-configuring AC timing -parameters and other settings during frequency, voltage and -temperature changes - -Platform Data (see include/linux/platform_data/emif_plat.h): -===================================================================== -DDR device details and other board dependent and SoC dependent -information can be passed through platform data (struct emif_platform_data) -- DDR device details: 'struct ddr_device_info' -- Device AC timings: 'struct lpddr2_timings' and 'struct lpddr2_min_tck' -- Custom configurations: customizable policy options through - 'struct emif_custom_configs' -- IP revision -- PHY type - -Interface to the external world: -================================ -EMIF driver registers notifiers for voltage and frequency changes -affecting EMIF and takes appropriate actions when these are invoked. -- freq_pre_notify_handling() -- freq_post_notify_handling() -- volt_notify_handling() - -Debugfs -======== -The driver creates two debugfs entries per device. -- regcache_dump : dump of register values calculated and saved for all - frequencies used so far. -- mr4 : last polled value of MR4 register in the LPDDR2 device. MR4 - indicates the current temperature level of the device. _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
