overlays-11-add-rk3308bs(:1)

Original-Subject: [ARCHEOLOGY] Rockpis wifi fixes (#4008)
> X-Git-Archeology: > recovered message: > * RockPI-S board has no video I/O
> X-Git-Archeology: > recovered message: > * udev rule to fix MAC address of iface based on UUID
> X-Git-Archeology: > recovered message: > Deals with WiFi chip lacking any EEPROM to store its unique Ethernet MAC address
> X-Git-Archeology: > recovered message: > Generic mechanism -- could be utilized for other boards having similar issues
> X-Git-Archeology: > recovered message: > * Handy Device Tree overlays for the RockPI S
> X-Git-Archeology: > recovered message: > Use armbian-add-overlay to install these
> X-Git-Archeology: > recovered message: > Reduce CPU voltage for the RK3308 B-S
> X-Git-Archeology: > recovered message: > Option to overclock RK3308 B-S to 1.3Ghz
> X-Git-Archeology: > recovered message: > Increase SDIO clock rate from 1Mhz to 10Mhz
> X-Git-Archeology: > recovered message: > This increases WiFi throughput from 300K bytes/s to 2.4M bytes/s
> X-Git-Archeology: > recovered message: > * corrected comment
> X-Git-Archeology: > recovered message: > * No longer repeat standard opp's in this dts
> X-Git-Archeology: > recovered message: > Require that the standard bs dts already be installed
> X-Git-Archeology: > recovered message: > * User README for adding RockPI-S board variant specific dts overlays
> X-Git-Archeology: > recovered message: > * "enabled" --> "okay"
> X-Git-Archeology: > recovered message: > * added mention of sdnand.dts, fixed typo
> X-Git-Archeology: > recovered message: > * added p2p0 to interfaces whose MAC address should be "fixed"
> X-Git-Archeology: > recovered message: > * RK3308 CPU serial number in nvmem replaces UUID for derivation of fixed MAC addr
> X-Git-Archeology: > recovered message: > Restored use of install utility
> X-Git-Archeology: > recovered message: > * Use RK3308 specific CPU serial number
> X-Git-Archeology: > recovered message: > rather than rootfs UUID
> X-Git-Archeology: > recovered message: > * remove generic fixMACaddress
> X-Git-Archeology: > recovered message: > * Install fixMACaddr file-by-file via install utility
> X-Git-Archeology: > recovered message: > * Drive SDIO bus signals faster
> X-Git-Archeology: > recovered message: > setting RK3308_SOC_CON0_VCCIO3 reduces signal rise/fall times to WiFi SDIO chip
> X-Git-Archeology: > recovered message: > from 30ns to 5ns.
> X-Git-Archeology: > recovered message: > This odd fix forward ported from legacy kernel.
> X-Git-Archeology: > recovered message: > Allows Rock Pi-S WiFi to operate at full speed.
> X-Git-Archeology: > recovered message: > * Set RK3308 I/O voltage domains before SDIO initializes
> X-Git-Archeology: > recovered message: > This patch moves responibility form the io-domain to the pinctrl driver because
> X-Git-Archeology: > recovered message: > the io-domain driver is probed after the SDIO devices are discovered.
> X-Git-Archeology: > recovered message: > This was causing multiple SDIO I/O failures during boot.
> X-Git-Archeology: > recovered message: > A new pinctrl property is added:
> X-Git-Archeology: > recovered message: > io-1v8-domains
> X-Git-Archeology: > recovered message: > is a u32 interpreted as a bit mask where each set bit corresponds to
> X-Git-Archeology: > recovered message: > a 1.8V I/O domain (as opposed to the default of 3.3V for I/O)
> X-Git-Archeology: > recovered message: > The mask is writted to the RK3308_SOC_CON0 GRF register
> X-Git-Archeology: > recovered message: > (once) when the pinctrl driver starts
> X-Git-Archeology: > recovered message: > The default mask is 0x10 where only I/O domain 4 runs at 1.8V
> X-Git-Archeology: > recovered message: > This is necessary for the RockPI-S to run the SDIO clock at high (50Mhz) speed
> X-Git-Archeology: > recovered message: > * align whitespace
> X-Git-Archeology: > recovered message: > * factored rk3308bs overlays out up sdio speedup patch
> X-Git-Archeology: > recovered message: > * factored dts for RK3308 iodomains and pinctrl patches out of speedup patch
> X-Git-Archeology: > recovered message: > * remains of sdio speedup patch merely add iodomains support for rk3308
> X-Git-Archeology: > recovered message: > * factored rockpis dts modification out from rk3308 io voltage domains
> X-Git-Archeology: > recovered message: > replaced rk3308 support from iodomains with
> X-Git-Archeology: > recovered message: > new io-voltage-domains property added to pinctrl
> X-Git-Archeology: > recovered message: > io-voltage-domains specific to rk3308 for now, others SOCs may be added later.
> X-Git-Archeology: > recovered message: > * add sequence numbering to names of rk3308 patches
> X-Git-Archeology: > recovered message: > * corrected tab alignment
> X-Git-Archeology: - Revision d3a3afe3850861ceaeb44f3631251c764a28cd43: armbian/build@d3a3afe
> X-Git-Archeology:   Date: Thu, 13 Oct 2022 18:34:43 +0200
> X-Git-Archeology:   From: brentr <brent@mbari.org>
> X-Git-Archeology:   Subject: Rockpis wifi fixes (#4008)
> X-Git-Archeology:
> X-Git-Archeology: - Revision 6765f734cc4a22aeaa9f99a3ad28c8c322de26f6: armbian/build@6765f73
> X-Git-Archeology:   Date: Tue, 25 Oct 2022 11:26:51 +0200
> X-Git-Archeology:   From: Igor Pecovnik <igorpecovnik@users.noreply.github.com>
> X-Git-Archeology:   Subject: Bump rockchip64 edge to 6.0.y (#4337)
> X-Git-Archeology:
> X-Git-Archeology: - Revision 92f1a22d76b987afa7ba555d5b509adc51d689e7: armbian/build@92f1a22
> X-Git-Archeology:   Date: Fri, 16 Dec 2022 13:38:13 +0100
> X-Git-Archeology:   From: Igor Pecovnik <igorpecovnik@users.noreply.github.com>
> X-Git-Archeology:   Subject: Re-add rockchip64 6.0 patches (#4575)
> X-Git-Archeology:
> X-Git-Archeology: - Revision 34ae84fac5d0b66a1ab2d1e51534b7beb13ef245: armbian/build@34ae84f
> X-Git-Archeology:   Date: Fri, 05 May 2023 14:22:00 +0200
> X-Git-Archeology:   From: amazingfate <liujianfeng1994@gmail.com>
> X-Git-Archeology:   Subject: bump rockchip64 edge to v6.3
> X-Git-Archeology:
X-Armbian: Patch-File: overlays-11-add-rk3308bs
X-Armbian: Patch-File-Counter: 1
X-Armbian: Patch-Rel-Directory: patch/kernel/archive/rockchip64-6.3
X-Armbian: Patch-Type: kernel
X-Armbian: Patch-Root-Type: core
X-Armbian: Patch-Sub-Type: common
X-Armbian: Original-Subject: [ARCHEOLOGY] Rockpis wifi fixes (#4008)

arch/arm64/boot/dts/rockchip/overlay/Makefile

@@ -19,7 +19,11 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
 	rockchip-rk3318-box-wlan-ext.dtbo \
 	rockchip-rk3318-box-wlan-ap6330.dtbo \
 	rockchip-rk3318-box-cpu-hs.dtbo \
-	rockchip-rk3318-box-emmc-hs200.dtbo
+	rockchip-rk3318-box-emmc-hs200.dtbo \
+        rk3308-bs.dtbo rk3308-bs@1.3ghz.dtbo \
+        rk3308-sdio@10mhz.dtbo rk3308-sdio@4mhz.dtbo \
+        rk3308-emmc.dtbo
+
 
 scr-$(CONFIG_ARCH_ROCKCHIP) += \
        rockchip-fixup.scr

arch/arm64/boot/dts/rockchip/overlay/README.rockchip-overlays

@@ -10,6 +10,10 @@ rockchip (Rockchip)
 
 - i2c7, i2c8, pcie-gen2, spi-spidev, uart4, w1-gpio
 
+for RK3308 (Rock PI-S)
+
+- rk3308bs rk3308bs-1.3ghz sdio-10mhz sdio-4mhz emmc
+
 ### Overlay details:
 
 ### i2c7
@@ -166,3 +170,40 @@ wifi + bt chip and clones.
 ### rk3318-box-cpu-hs
 
 Enable additional cpu "high-speed" bins up to 1.3ghz
+
+**********************************
+Details for Rock Pi-S overlays  (7 Oct 2022):
+
+V1.3 of the RockPi-S uses a the B-S variant of the RK3308 that is optimized
+for lower core voltages than the older chips on the V1.2 and V1.1 boards.
+All V1.3 boards should apply the
+###  rk3308-bs
+overlay to lower the core voltages to reduce power consumption.
+This also enables operation at 1.1Ghz.
+
+Optionally, V1.3 boards may add the
+###  rk3308-bs@1.3ghz
+to overclock the B-S CPU to 1.3Ghz.
+Add the rk3308bs-rock-pi-s-1.3Ghz overlay  *after adding*  rockchip-rk3308bs
+
+===========
+Install the following overlays only on older (unpatched) mainline kernels:
+
+Older mainline kernels disable the Rock Pi S built-in SDNAND (EMMC)
+###  rk3308-emmc
+enables your SDNAND chip.  It is OK to install for boards that lack the SDNAND.
+
+The legacy 4.4 and this mainline kernel drive the SDIO clock at 50Mhz to provide
+maximum WiFi throughput.  However...
+
+Older versions of the Mainline kernel drive the SDIO clock at only 1Mhz
+This reduces WiFi throughput to < 500kB/s !
+
+###  rk3308-sdio@10mhz
+increases the SDIO clock to 10Mhz, providing about 2.4MB/s WiFi throughput.
+
+###  rk3308-sdio@4mhz
+increases the SDIO clock to only 4Mhz, providing about 1MB/s WiFi throughput.
+use this only if 10Mhz SDIO clock is unstable
+
+Note that older mainline kernels cannot drive the SDIO clock faster than 10Mhz.

arch/arm64/boot/dts/rockchip/overlay/rk3308-bs.dts

@@ -0,0 +1,39 @@
+//Adjustments for Rockchip RK3308-BS suffix SOC
+//https://dl.radxa.com/rockpis/docs/sw/RK3308B-S&RK3308H-S_Software_Compatibility_Introduction_V1.0.0_20211016.pdf
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target = <&cpu0_opp_table>;
+		__overlay__ {
+			opp-408000000 {
+				opp-hz = /bits/ 64 <408000000>;
+				opp-microvolt = <850000 850000 1200000>;
+				clock-latency-ns = <40000>;
+				opp-suspend;
+			};
+			opp-600000000 {
+				opp-hz = /bits/ 64 <600000000>;
+				opp-microvolt = <900000 900000 1200000>;
+				clock-latency-ns = <40000>;
+			};
+			opp-816000000 {
+				opp-hz = /bits/ 64 <816000000>;
+				opp-microvolt = <1000000 1000000 1200000>;
+				clock-latency-ns = <40000>;
+			};
+			opp-1008000000 {
+				opp-hz = /bits/ 64 <1008000000>;
+				opp-microvolt = <1125000 1125000 1200000>;
+				clock-latency-ns = <40000>;
+			};
+			opp-1104000000 {
+				opp-hz = /bits/ 64 <1104000000>;
+				opp-microvolt = <1200000 1200000 1200000>;
+				clock-latency-ns = <40000>;
+			};
+		};
+	};
+};

arch/arm64/boot/dts/rockchip/overlay/rk3308-bs@1.3ghz.dts

@@ -0,0 +1,26 @@
+//Overclock the Rockchip RK3308-BS suffix SOC to 1.3 Ghz
+//  assumes rk3308bs-rock-pi-s.dts overlay has already been added
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target = <&cpu0_opp_table>;
+		__overlay__ {
+			//the following are unsupported, overclocked operating points
+			opp-1200000000 {
+				opp-hz = /bits/ 64 <1200000000>;
+				opp-microvolt = <1200000 1200000 1200000>;
+				clock-latency-ns = <40000>;
+				status = "okay";
+			};
+			opp-1296000000 {
+				opp-hz = /bits/ 64 <1296000000>;
+				opp-microvolt = <1200000 1200000 1200000>;
+				clock-latency-ns = <40000>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm64/boot/dts/rockchip/overlay/rk3308-emmc.dts

@@ -0,0 +1,13 @@
+//For RockPI-S:  enable SDnand chip
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target = <&emmc>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};

arch/arm64/boot/dts/rockchip/overlay/rk3308-sdio@10mhz.dts

@@ -0,0 +1,14 @@
+//For RockPI-S:  Increase SDIO Max Frequency from 1Mhz to 10Mhz
+//Increases RTL8723-BS WiFi's throughput from 300KB/s to 2.4MB/s
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target = <&sdio>;
+		__overlay__ {
+			max-frequency = <10000000>;
+		};
+	};
+};

arch/arm64/boot/dts/rockchip/overlay/rk3308-sdio@4mhz.dts

@@ -0,0 +1,14 @@
+//For RockPI-S:  Increase SDIO Max Frequency from 1Mhz to 4Mhz
+//Increases RTL8723-BS WiFi's throughput from 300KB/s to 1MB/s
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target = <&sdio>;
+		__overlay__ {
+			max-frequency = <4000000>;
+		};
+	};
+};