63 lines
2.6 KiB
Plaintext
63 lines
2.6 KiB
Plaintext
# overlays fixup script
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# implements (or rather substitutes) overlay arguments functionality
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# using u-boot scripting, environment variables and "fdt" command
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setenv decompose_pin 'setexpr tmp_pinctrl sub "GPIO(0|1|2|3|4)_\\S\\d+" "\\1";
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setexpr tmp_bank sub "GPIO\\d_(\\S)\\d+" "\\1";
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test "${tmp_bank}" = "A" && setenv tmp_bank 0;
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test "${tmp_bank}" = "B" && setenv tmp_bank 1;
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test "${tmp_bank}" = "C" && setenv tmp_bank 2;
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test "${tmp_bank}" = "D" && setenv tmp_bank 3;
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setexpr tmp_pin sub "GPIO\\d_\\S(\\d+)" "\\1";
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setexpr tmp_bank ${tmp_bank} * 8;
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setexpr tmp_pin ${tmp_bank} + ${tmp_pin}'
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if test -n "${param_spinor_spi_bus}"; then
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test "${param_spinor_spi_bus}" = "0" && setenv tmp_spi_path "spi@ff1c0000"
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test "${param_spinor_spi_bus}" = "1" && setenv tmp_spi_path "spi@ff1d0000"
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test "${param_spinor_spi_bus}" = "2" && setenv tmp_spi_path "spi@ff1e0000"
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test "${param_spinor_spi_bus}" = "3" && setenv tmp_spi_path "spi@ff1f0000"
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fdt set /${tmp_spi_path} status "okay"
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fdt set /${tmp_spi_path}/spiflash@0 status "okay"
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if test -n "${param_spinor_max_freq}"; then
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fdt set /${tmp_spi_path}/spiflash@0 spi-max-frequency "<${param_spinor_max_freq}>"
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fi
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if test "${param_spinor_spi_cs}" = "1"; then
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fdt set /${tmp_spi_path}/spiflash@0 reg "<1>"
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fi
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env delete tmp_spi_path
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fi
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if test -n "${param_spidev_spi_bus}"; then
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test "${param_spidev_spi_bus}" = "0" && setenv tmp_spi_path "spi@ff1c0000"
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test "${param_spidev_spi_bus}" = "1" && setenv tmp_spi_path "spi@ff1d0000"
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test "${param_spidev_spi_bus}" = "2" && setenv tmp_spi_path "spi@ff1e0000"
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test "${param_spidev_spi_bus}" = "3" && setenv tmp_spi_path "spi@ff1f0000"
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fdt set /${tmp_spi_path} status "okay"
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fdt set /${tmp_spi_path}/spidev status "okay"
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if test -n "${param_spidev_max_freq}"; then
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fdt set /${tmp_spi_path}/spidev spi-max-frequency "<${param_spidev_max_freq}>"
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fi
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if test "${param_spidev_spi_cs}" = "1"; then
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fdt set /${tmp_spi_path}/spidev reg "<1>";
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fi
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fi
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if test -n "${param_w1_pin}"; then
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setenv tmp_pinctrl "${param_w1_pin}"
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setenv tmp_bank "${param_w1_pin}"
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setenv tmp_pin "${param_w1_pin}"
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run decompose_pin
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#echo "${param_w1_pin} ---> pinctrl = ${tmp_pinctrl}"
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#echo "${param_w1_pin} ---> bank = ${tmp_bank}"
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#echo "${param_w1_pin} ---> pin = ${tmp_pin}"
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fdt get value tmp_pinctrl /__symbols__ gpio${tmp_pinctrl}
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#echo "${param_w1_pin} ---> tmp_pinctrl = ${tmp_pinctrl}"
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fdt get value tmp_phandle ${tmp_pinctrl} phandle
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#echo "${param_w1_pin} ---> tmp_phandle = ${tmp_phandle}"
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fdt set /onewire@0 gpios "<${tmp_phandle} 0x000000${tmp_pin} 0 0>"
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env delete tmp_pinctrl tmp_bank tmp_pin tmp_phandle
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fi
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