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authorBryan O'Donoghue <bryan.odonoghue@linaro.org>2018-06-20 16:56:31 +0100
committerBryan O'Donoghue <bryan.odonoghue@linaro.org>2018-09-04 13:36:23 +0100
commit965bda4d4e846439df1baf91068d572f1b099c16 (patch)
tree7b832dba44b9298e69b01374a1ca480114a922ba /plat/imx/common/imx_aips.c
parentddfb773fb0816c906ec76da963640b75ab9174bf (diff)
downloadtrusted-firmware-a-965bda4d4e846439df1baf91068d572f1b099c16.tar.gz
imx: imx_io_mux: Define an IO-mux layer
This patch defines: - The full range of IO-mux register offsets relative to the base address of the IO-mux block base address. - The bits for muxing the UART1 TX/RX lines. - The bits for muxing the UART6 TX/RX lines. - The pad control pad bits for the UART Two functions are provided to configure pad muxes: - void io_muxc_set_pad_alt_function(pad_mux_offset, alt_function) Takes a pad_mux_offset and sets the alt_function bit-mask supplied. This will have the effect of switching the pad into one of its defined peripheral functions. These peripheral function modes are defined in the NXP documentation and need to be referred to in order to correctly configure a new alternative-function. - void io_muxc_set_pad_features(pad_feature_offset, pad_features) Takes a pad_feature_offset and applies a pad_features bit-mask to the indicated pad. This function allows the setting of PAD drive-strength, pull-up values, hysteresis glitch filters and slew-rate settings. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Diffstat (limited to 'plat/imx/common/imx_aips.c')
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