linux-rockchip: Add lec-px30 support patches

Signed-off-by: Alexandru Costache <alexandru@balena.io>

Author: acostach

layers/meta-balena-nanopc-t4/recipes-kernel/linux/files/4.4.185/0001-Device-tree-for-LEC-PX30-A2.patch

@@ -0,0 +1,40 @@
+From 73325c6a311a6e606714a48b2ca5615ea512254f Mon Sep 17 00:00:00 2001
+From: Dineshkumar V <dineshkumar.varadarajan@adlinktech.com>
+Date: Thu, 5 Dec 2019 21:45:51 +0530
+Subject: [PATCH 5/5] Modified compatible property as per target kernel dts
+ file
+
+---
+ drivers/clk/rockchip/clk-px30.c    | 2 +-
+ drivers/cpufreq/rockchip-cpufreq.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/clk/rockchip/clk-px30.c b/drivers/clk/rockchip/clk-px30.c
+index 56e78c2..96690f1 100644
+--- a/drivers/clk/rockchip/clk-px30.c
++++ b/drivers/clk/rockchip/clk-px30.c
+@@ -1068,7 +1068,7 @@ static void __init px30_clk_init(struct device_node *np)
+ 				   PX30_GRF_SOC_STATUS0);
+ 	rockchip_clk_register_branches(ctx, px30_clk_branches,
+ 				       ARRAY_SIZE(px30_clk_branches));
+-	if (of_machine_is_compatible("rockchip,px30"))
++	if (of_machine_is_compatible("adlink,lec-px30"))
+ 		rockchip_clk_register_branches(ctx, px30_gpu_src_clk,
+ 				       ARRAY_SIZE(px30_gpu_src_clk));
+ 	else
+diff --git a/drivers/cpufreq/rockchip-cpufreq.c b/drivers/cpufreq/rockchip-cpufreq.c
+index c206b7c..ccb38ab 100644
+--- a/drivers/cpufreq/rockchip-cpufreq.c
++++ b/drivers/cpufreq/rockchip-cpufreq.c
+@@ -164,7 +164,7 @@ out:
+ }
+ static const struct of_device_id rockchip_cpufreq_of_match[] = {
+ 	{
+-		.compatible = "rockchip,px30",
++		.compatible = "adlink,lec-px30",
+ 		.data = (void *)&px30_get_soc_info,
+ 	},
+ 	{
+-- 
+2.7.4
+

layers/meta-balena-nanopc-t4/recipes-kernel/linux/files/4.4.185/0002-Added-ethernet-driver-support-for-LEC-PX30-A2.patch

@@ -0,0 +1,112 @@
+From 2ed09d2c6dabe7ae167b4e1fa585f5e1fbced5b2 Mon Sep 17 00:00:00 2001
+From: Dineshkumar V <dineshkumar.varadarajan@adlinktech.com>
+Date: Wed, 26 Feb 2020 18:45:49 +0530
+Subject: [PATCH 7/7] Added SPI chip select enable/disable support for SPI
+ Read/Write
+
+---
+ drivers/spi/spi-rockchip.c | 14 ++------------
+ drivers/spi/spi.c          | 18 ++++++++++++++++--
+ include/linux/spi/spi.h    |  1 +
+ 3 files changed, 19 insertions(+), 14 deletions(-)
+
+diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
+index a9a6339..7e44fcf 100644
+--- a/drivers/spi/spi-rockchip.c
++++ b/drivers/spi/spi-rockchip.c
+@@ -433,18 +433,9 @@ static void rockchip_spi_dma_txcb(void *data)
+ 	spin_unlock_irqrestore(&rs->lock, flags);
+ }
+ 
+-static u32 rockchip_spi_calc_burst_size(u32 data_len)
+-{
+-	u32 i;
+ 
+ 	/* burst size: 1, 2, 4, 8 */
+-	for (i = 1; i < 8; i <<= 1) {
+-		if (data_len & i)
+-			break;
+-	}
+ 
+-	return i;
+-}
+ 
+ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
+ {
+@@ -465,7 +456,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
+ 		rxconf.direction = rs->dma_rx.direction;
+ 		rxconf.src_addr = rs->dma_rx.addr;
+ 		rxconf.src_addr_width = rs->n_bytes;
+-		rxconf.src_maxburst = rockchip_spi_calc_burst_size(rs->len / rs->n_bytes);
++		rxconf.src_maxburst = 1;
+ 		dmaengine_slave_config(rs->dma_rx.ch, &rxconf);
+ 
+ 		rxdesc = dmaengine_prep_slave_sg(
+@@ -598,8 +589,7 @@ static void rockchip_spi_config(struct rockchip_spi *rs)
+ 	writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_RXFTLR);
+ 
+ 	writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_DMATDLR);
+-	writel_relaxed(rockchip_spi_calc_burst_size(rs->len / rs->n_bytes) - 1,
+-		       rs->regs + ROCKCHIP_SPI_DMARDLR);
++	writel_relaxed(0, rs->regs + ROCKCHIP_SPI_DMARDLR);
+ 	writel_relaxed(dmacr, rs->regs + ROCKCHIP_SPI_DMACR);
+ 
+ 	spi_set_clk(rs, div);
+diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
+index c132c67..6b94ee4 100644
+--- a/drivers/spi/spi.c
++++ b/drivers/spi/spi.c
+@@ -673,6 +673,10 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
+ 	if (spi->mode & SPI_CS_HIGH)
+ 		enable = !enable;
+ 
++	if(spi->spi_gpio_cs>0)
++	{
++		gpio_set_value(spi->spi_gpio_cs,!enable);
++	}
+ 	if (gpio_is_valid(spi->cs_gpio))
+ 		gpio_set_value(spi->cs_gpio, !enable);
+ 	else if (spi->master->set_cs)
+@@ -903,8 +907,6 @@ static int spi_map_msg(struct spi_master *master, struct spi_message *msg)
+ 		if (max_tx || max_rx) {
+ 			list_for_each_entry(xfer, &msg->transfers,
+ 					    transfer_list) {
+-				if (!xfer->len)
+-					continue;
+ 				if (!xfer->tx_buf)
+ 					xfer->tx_buf = master->dummy_tx;
+ 				if (!xfer->rx_buf)
+@@ -1521,6 +1523,18 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc)
+ 	}
+ 	spi->max_speed_hz = value;
+ 
++	spi->spi_gpio_cs=of_get_named_gpio(nc,"spi-gpio-cs",0);
++	if(spi->spi_gpio_cs>0)
++	{
++		printk("spi->spi_gpio_cs=%d\n",spi->spi_gpio_cs);
++		rc = gpio_request(spi->spi_gpio_cs, "spi0_gpio_cs");
++       		if (rc != 0) {
++                	gpio_free(spi->spi_gpio_cs);
++                printk("gpio request spi_gpio_cs  failed\n");
++        	}
++        	else
++                    gpio_direction_output(spi->spi_gpio_cs, 1);
++        }	
+ 	/* Store a pointer to the node in the device structure */
+ 	of_node_get(nc);
+ 	spi->dev.of_node = nc;
+diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
+index cce80e6..e1b8c04 100644
+--- a/include/linux/spi/spi.h
++++ b/include/linux/spi/spi.h
+@@ -158,6 +158,7 @@ struct spi_device {
+ 	void			*controller_data;
+ 	char			modalias[SPI_NAME_SIZE];
+ 	int			cs_gpio;	/* chip select gpio */
++	int 			spi_gpio_cs;/*add by lm*/
+ 
+ 	/* the statistics */
+ 	struct spi_statistics	statistics;
+-- 
+2.7.4
+

layers/meta-balena-nanopc-t4/recipes-kernel/linux/files/4.4.185/0003-Added-mcp25xxfd-driver-support-for-LEC-PX30-A2.patch

@@ -0,0 +1,25 @@
+From 981b285389321d180d4dad2e81cf34f513fa507e Mon Sep 17 00:00:00 2001
+From: Arun Kumar E V <dineshkumar.varadarajan@adlinktech.com>
+Date: Tue, 3 Mar 2020 15:21:29 +0530
+Subject: [PATCH 9/9] Modified Boot Arguments to mount fileystem from SD card
+
+---
+ arch/arm64/boot/dts/rockchip/rk3326-linux.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm64/boot/dts/rockchip/rk3326-linux.dtsi b/arch/arm64/boot/dts/rockchip/rk3326-linux.dtsi
+index 9fbb720..4f2c272 100644
+--- a/arch/arm64/boot/dts/rockchip/rk3326-linux.dtsi
++++ b/arch/arm64/boot/dts/rockchip/rk3326-linux.dtsi
+@@ -45,7 +45,7 @@
+ 
+ 	chosen {
+  		//bootargs = "earlycon=uart8250,mmio32,0xff160000 swiotlb=1 console=ttyFIQ0 rw root=PARTUUID=614e0000-0000 rootwait";
+-		bootargs = "earlycon=uart8250,mmio32,0xff160000 swiotlb=1 console=ttyFIQ0 rw root=/dev/mmcblk1p4 rootwait";
++		bootargs = "earlycon=uart8250,mmio32,0xff160000 swiotlb=1 console=ttyFIQ0 rw root=/dev/mmcblk0p4 rootwait";
+ 	/*	 bootargs = "console=tty1 rw root=PARTUUID=614e0000-0000 rootwait";*/
+ 	};
+ 
+-- 
+2.7.4
+

layers/meta-balena-nanopc-t4/recipes-kernel/linux/files/4.4.185/0004-Added-LT9611-driver-support-for-LEC-PX30-A2.patch

@@ -0,0 +1,24 @@
+Patch imported from https://github.com/armbian/build.git at revision c55f6ea8bc220bded6695fdae8b0c5bfa891b688
+
+Upstream-Status: Inappropriate [not author]
+Signed-off-by: Florin Sarbu <florin@balena.io>
+---
+ drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c b/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c
+index fa07a94..352ea75 100644
+--- a/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c
++++ b/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c
+@@ -18,7 +18,7 @@
+  */
+  
+ #define VENDOR_ETC_FIRMWARE "/vendor/etc/firmware/"
+-#define SYSTEM_ETC_FIRMWARE "/system/etc/firmware/"
++#define SYSTEM_ETC_FIRMWARE "/lib/firmware/rkwifi/"
+ char ANDROID_FW_PATH[64] = {0};
+ 
+ extern int get_wifi_chip_type(void);
+-- 
+2.7.4
+

layers/meta-balena-nanopc-t4/recipes-kernel/linux/files/4.4.185/0005-Modified-compatible-property-as-per-target-kernel-dt.patch

@@ -0,0 +1,38 @@
+SUMMARY = "LEC-PX30 kernel"
+DESCRIPTION = "ADLINK iPi LEC-PX30 kernel"
+
+FILESEXTRAPATHS_prepend := "${THISDIR}/files/4.4.185:"
+
+LINUX_VERSION = "4.4.185"
+
+SRC_URI = " \
+    git://github.com/rockchip-linux/kernel.git;branch=develop-4.4 \
+    file://adjust_wireless_firmware_path.patch \
+"
+SRCREV = "e83084b53d4e02f5fd25aad25b42ffd3108c7f15"
+
+require recipes-kernel/linux/linux-yocto.inc
+
+PV = "${LINUX_VERSION}+git${SRCPV}"
+
+S = "${WORKDIR}/git"
+
+KCONFIG_MODE="--alldefconfig"
+
+COMPATIBLE_MACHINE = "(lec-px30)"
+
+SRC_URI += " \
+        file://defconfig \
+        file://0001-Device-tree-for-LEC-PX30-A2.patch \
+        file://0002-Added-ethernet-driver-support-for-LEC-PX30-A2.patch \
+        file://0003-Added-mcp25xxfd-driver-support-for-LEC-PX30-A2.patch \
+        file://0004-Added-LT9611-driver-support-for-LEC-PX30-A2.patch \
+        file://0005-Modified-compatible-property-as-per-target-kernel-dt.patch \
+        file://0006-Added-Sx150x-gpio-expander-suppport-for-LEC-PX30-A2.patch \
+        file://0007-Added-SPI-chip-select-enable-disable-support-for-SPI.patch \
+"
+
+# Comment the below line to mount file system from eMMC
+# SRC_URI += "file://0008-Modified-Boot-Arguments-to-mount-fileystem-from-SD-c.patch")"
+
+