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d3a3afe385
* RockPI-S board has no video I/O * udev rule to fix MAC address of iface based on UUID Deals with WiFi chip lacking any EEPROM to store its unique Ethernet MAC address Generic mechanism -- could be utilized for other boards having similar issues * Handy Device Tree overlays for the RockPI S Use armbian-add-overlay to install these Reduce CPU voltage for the RK3308 B-S Option to overclock RK3308 B-S to 1.3Ghz Increase SDIO clock rate from 1Mhz to 10Mhz This increases WiFi throughput from 300K bytes/s to 2.4M bytes/s * corrected comment * No longer repeat standard opp's in this dts Require that the standard bs dts already be installed * User README for adding RockPI-S board variant specific dts overlays * "enabled" --> "okay" * added mention of sdnand.dts, fixed typo * added p2p0 to interfaces whose MAC address should be "fixed" * RK3308 CPU serial number in nvmem replaces UUID for derivation of fixed MAC addr Restored use of install utility * Use RK3308 specific CPU serial number rather than rootfs UUID * remove generic fixMACaddress * Install fixMACaddr file-by-file via install utility * Drive SDIO bus signals faster setting RK3308_SOC_CON0_VCCIO3 reduces signal rise/fall times to WiFi SDIO chip from 30ns to 5ns. This odd fix forward ported from legacy kernel. Allows Rock Pi-S WiFi to operate at full speed. * Set RK3308 I/O voltage domains before SDIO initializes This patch moves responibility form the io-domain to the pinctrl driver because the io-domain driver is probed after the SDIO devices are discovered. This was causing multiple SDIO I/O failures during boot. A new pinctrl property is added: io-1v8-domains is a u32 interpreted as a bit mask where each set bit corresponds to a 1.8V I/O domain (as opposed to the default of 3.3V for I/O) The mask is writted to the RK3308_SOC_CON0 GRF register (once) when the pinctrl driver starts The default mask is 0x10 where only I/O domain 4 runs at 1.8V This is necessary for the RockPI-S to run the SDIO clock at high (50Mhz) speed * align whitespace * factored rk3308bs overlays out up sdio speedup patch * factored dts for RK3308 iodomains and pinctrl patches out of speedup patch * remains of sdio speedup patch merely add iodomains support for rk3308 * factored rockpis dts modification out from rk3308 io voltage domains replaced rk3308 support from iodomains with new io-voltage-domains property added to pinctrl io-voltage-domains specific to rk3308 for now, others SOCs may be added later. * add sequence numbering to names of rk3308 patches * corrected tab alignment