build/patch/kernel/archive/rockchip64-6.3/rk3308-0002-iodomains.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: brentr <brent@mbari.org>
Date: Thu, 13 Oct 2022 18:34:43 +0200
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: https://github.com/armbian/build/commit/d3a3afe3850861ceaeb44f3631251c764a28cd43
> 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: https://github.com/armbian/build/commit/6765f734cc4a22aeaa9f99a3ad28c8c322de26f6
> 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: https://github.com/armbian/build/commit/92f1a22d76b987afa7ba555d5b509adc51d689e7
> 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: https://github.com/armbian/build/commit/34ae84fac5d0b66a1ab2d1e51534b7beb13ef245
> 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:
---
 drivers/soc/rockchip/io-domain.c | 45 ++++++++++
 1 file changed, 45 insertions(+)

diff --git a/drivers/soc/rockchip/io-domain.c b/drivers/soc/rockchip/io-domain.c
index 6619256c2d11..6ffaccd3ed80 100644
--- a/drivers/soc/rockchip/io-domain.c
+++ b/drivers/soc/rockchip/io-domain.c
@@ -39,6 +39,10 @@
 #define RK3288_SOC_CON2_FLASH0		BIT(7)
 #define RK3288_SOC_FLASH_SUPPLY_NUM	2
 
+#define RK3308_SOC_CON0			0x300
+#define RK3308_SOC_CON0_VCCIO3		BIT(8)
+#define RK3308_SOC_VCCIO3_SUPPLY_NUM	3
+
 #define RK3328_SOC_CON4			0x410
 #define RK3328_SOC_CON4_VCCIO2		BIT(7)
 #define RK3328_SOC_VCCIO2_SUPPLY_NUM	1
@@ -229,6 +233,30 @@ static void rk3288_iodomain_init(struct rockchip_iodomain *iod)
 		dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
 }
 
+static void rk3308_iodomain_init(struct rockchip_iodomain *iod)
+{
+	int ret;
+	u32 val;
+
+	/* if no vccio3 supply we should leave things alone */
+	if (!iod->supplies[RK3308_SOC_VCCIO3_SUPPLY_NUM].reg)
+		return;
+
+	/*
+	 * vccio3 iodomain voltage should be determined by GPIO4 input state
+	 * RockPI-S uses this to drive the SDIO interface at 50Mhz
+	 * (otherwise SDIO clock will be limited to 10Mhz)
+	 *
+	 * Note that setting vccio4 [rather than vccio3] is observed to reduce
+	 * the rise time of SDIO-clk from 30ns to 5ns.
+	 * The CON0_VCCIO3 control bit appears to influence vccio4.
+	 */
+	val = RK3308_SOC_CON0_VCCIO3 | (RK3308_SOC_CON0_VCCIO3 << 16);
+	ret = regmap_write(iod->grf, RK3308_SOC_CON0, val);
+	if (ret < 0)
+		dev_warn(iod->dev, "couldn't update vccio3 vsel ctrl\n");
+}
+
 static void rk3328_iodomain_init(struct rockchip_iodomain *iod)
 {
 	int ret;
@@ -376,6 +404,19 @@ static const struct rockchip_iodomain_soc_data soc_data_rk3288 = {
 	.init = rk3288_iodomain_init,
 };
 
+static const struct rockchip_iodomain_soc_data soc_data_rk3308 = {
+	.grf_offset = 0x300,
+	.supply_names = {
+		"vccio0",
+		"vccio1",
+		"vccio2",
+		"vccio3",
+		"vccio4",
+		"vccio5",
+	},
+	.init = rk3308_iodomain_init,
+};
+
 static const struct rockchip_iodomain_soc_data soc_data_rk3328 = {
 	.grf_offset = 0x410,
 	.supply_names = {
@@ -528,6 +569,10 @@ static const struct of_device_id rockchip_iodomain_match[] = {
 		.compatible = "rockchip,rk3288-io-voltage-domain",
 		.data = &soc_data_rk3288
 	},
+	{
+		.compatible = "rockchip,rk3308-io-voltage-domain",
+		.data = &soc_data_rk3308
+	},
 	{
 		.compatible = "rockchip,rk3328-io-voltage-domain",
 		.data = &soc_data_rk3328
-- 
Armbian