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2018-10-10drivers: imx: mxc_usdhc: Do not set MMC_RSP_48 for MMC_RESPONSE_R2Bryan O'Donoghue
commit 97d5db8c5cb95c7ce69ff4d36bcda2aeda143576 reverts an update to the MMC layer that accompanied the original submission of this MMC driver this is the right-thing-to-do in terms of the MMC spec. Unfortunately the reversion also breaks this driver. The issue is the i.MX controller doesn't want MMC_RSP_48 set for MMC_RESPONSE_R2. The appropriate place to place that constraint is obviously in drivers/imx/usdhc/imx_usdhc.c not in the shared MMC codebase. This patch restores the logic the i.MX controller requires without breaking it for everyone else. Fixes: 97d5db8c5cb95c7ce69ff4d36bcda2aeda143576 Fixes: 2a82a9c95f6c06079f58d69315544a6b49cf64a4 Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Cc: Jun Nie <jun.nie@linaro.org>
2018-09-04drivers: imx: mxc_usdhc: Add USDHC driver to support boot EMMCJun Nie
Add USDHC driver to support boot EMMC. Only initialization and single/multiple block read are tested. [bod: fixed checkpatch.pl complaints] [bod: changed name to imx_usdhc for namespace consistency] [bod: squashed antecedent fixes into this one patch] Signed-off-by: Jun Nie <jun.nie@linaro.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04drivers: imx: imx_gpt: Add general purpose timer API bindingJun Nie
Add delay timer API so that it can be called by delay timer layer and used as delay timer globally. [bod: changed name from imx_delay_timer -> imx_gpt ] Signed-off-by: Jun Nie <jun.nie@linaro.org> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-08-30drivers: imx: crash-console: Add a mxc_crash_console driverBryan O'Donoghue
This patch does two main things - It implements the crash console UART init in assembly, as a hard-coded 115200 8N1 assumed from the 24 MHz clock. If the clock setup code has not run yet, this code can't work but, setting up clocks and clock-gates is way out of scope for this type of recovery function. - It adds code to write a character out of the NXP UART without using any stack-based operations when doing so. - Provides support for crash console in DCE or DTE mode. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-08-30drivers: imx: uart: Add mxc_consoleBryan O'Donoghue
- Adds a simple register read/write abstraction to cut-down on the amount of typing and text required to access UART registers in this driver. - Adds a console getc() callback. - Adds a console putc() callback, translating '\n' to '\r' + '\n'. - Initializes the MXC UART, take a crude method of calculating the BAUD rate generator. The UART clock-gates must have been enabled prior to launching the UART init code. Special care needs to be taken to ensure the UBIR is initialized before the UBMR and we need to ensure that UCR2.SRST comes good before trying to program other registers associated with the UART. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>