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tools/litex_json2dts_linux.py: add mmc voltage regulator 

Add MMC voltage regulator, and reference it from the mmc node.
For now, all boards we know of provide a 3.3V fixed voltage to
their SDCard receptacles, either directly or via PMOD.
This commit is contained in:
Gabriel Somlo 2022-01-12 13:29:43 -05:00 committed by gsomlo
parent 1011b817c8
commit 4aff26ccaf
1 changed files with 13 additions and 0 deletions
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13
litex/tools/litex_json2dts_linux.py
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@ -229,6 +229,18 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
}};
""".format(sys_clk_freq=d["constants"]["config_clock_frequency"])
# Voltage Regulator for LiteSDCard (if applicable) --------------------------------------------
if "sdcore" in d["csr_bases"]:
dts += """
vreg_mmc: vreg_mmc {{
compatible = "regulator-fixed";
regulator-name = "vreg_mmc";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
}};
""".format()
# SoC ------------------------------------------------------------------------------------------
dts += """
@ -390,6 +402,7 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
<0x{sdirq:x} 0x100>;
reg-names = "phy", "core", "reader", "writer", "irq";
clocks = <&sys_clk>;
vmmc-supply = <&vreg_mmc>;
bus-width = <0x04>;
{sdirq_interrupt}
status = "okay";