layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/817-spi-0004-MLK-21960-2-spi-fspi-dynamically-alloc-AHB-memory.patch b/target/linux/layerscape/patches-5.4/817-spi-0004-MLK-21960-2-spi-fspi-dynamically-alloc-AHB-memory.patch
new file mode 100644
index 0000000000..ed8dc301f7
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/817-spi-0004-MLK-21960-2-spi-fspi-dynamically-alloc-AHB-memory.patch
@@ -0,0 +1,100 @@
+From 6e46fe6d9428a41543bd19644de3c9f2611b73bf Mon Sep 17 00:00:00 2001
+From: Han Xu <han.xu@nxp.com>
+Date: Wed, 5 Jun 2019 16:43:30 -0500
+Subject: [PATCH] MLK-21960-2: spi: fspi: dynamically alloc AHB memory
+
+dynamically allocate AHB memory as needed.
+
+Signed-off-by: Han Xu <han.xu@nxp.com>
+---
+ drivers/spi/spi-nxp-fspi.c | 40 ++++++++++++++++++++++++++++++++++------
+ 1 file changed, 34 insertions(+), 6 deletions(-)
+
+--- a/drivers/spi/spi-nxp-fspi.c
++++ b/drivers/spi/spi-nxp-fspi.c
+@@ -307,6 +307,7 @@
+ 
+ #define POLL_TOUT		5000
+ #define NXP_FSPI_MAX_CHIPSELECT		4
++#define NXP_FSPI_MIN_IOMAP	SZ_4M
+ 
+ struct nxp_fspi_devtype_data {
+ 	unsigned int rxfifo;
+@@ -345,6 +346,8 @@ struct nxp_fspi {
+ 	void __iomem *ahb_addr;
+ 	u32 memmap_phy;
+ 	u32 memmap_phy_size;
++	u32 memmap_start;
++	u32 memmap_len;
+ 	struct clk *clk, *clk_en;
+ 	struct device *dev;
+ 	struct completion c;
+@@ -657,12 +660,35 @@ static void nxp_fspi_select_mem(struct n
+ 	f->selected = spi->chip_select;
+ }
+ 
+-static void nxp_fspi_read_ahb(struct nxp_fspi *f, const struct spi_mem_op *op)
++static int nxp_fspi_read_ahb(struct nxp_fspi *f, const struct spi_mem_op *op)
+ {
++	u32 start = op->addr.val;
+ 	u32 len = op->data.nbytes;
+ 
++	/* if necessary, ioremap before AHB read */
++	if ((!f->ahb_addr) || start < f->memmap_start ||
++	     start + len > f->memmap_start + f->memmap_len) {
++		if (f->ahb_addr)
++			iounmap(f->ahb_addr);
++
++		f->memmap_start = start;
++		f->memmap_len = len > NXP_FSPI_MIN_IOMAP ?
++				len : NXP_FSPI_MIN_IOMAP;
++
++		f->ahb_addr = ioremap_wc(f->memmap_phy + f->memmap_start,
++					 f->memmap_len);
++
++		if (!f->ahb_addr) {
++			dev_err(f->dev, "failed to alloc memory\n");
++			return -ENOMEM;
++		}
++	}
++
+ 	/* Read out the data directly from the AHB buffer. */
+-	memcpy_fromio(op->data.buf.in, (f->ahb_addr + op->addr.val), len);
++	memcpy_fromio(op->data.buf.in,
++		      f->ahb_addr + start - f->memmap_start, len);
++
++	return 0;
+ }
+ 
+ static void nxp_fspi_fill_txfifo(struct nxp_fspi *f,
+@@ -822,7 +848,7 @@ static int nxp_fspi_exec_op(struct spi_m
+ 	 */
+ 	if (op->data.nbytes > (f->devtype_data->rxfifo - 4) &&
+ 	    op->data.dir == SPI_MEM_DATA_IN) {
+-		nxp_fspi_read_ahb(f, op);
++		err = nxp_fspi_read_ahb(f, op);
+ 	} else {
+ 		if (op->data.nbytes && op->data.dir == SPI_MEM_DATA_OUT)
+ 			nxp_fspi_fill_txfifo(f, op);
+@@ -992,9 +1018,8 @@ static int nxp_fspi_probe(struct platfor
+ 
+ 	/* find the resources - controller memory mapped space */
+ 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fspi_mmap");
+-	f->ahb_addr = devm_ioremap_resource(dev, res);
+-	if (IS_ERR(f->ahb_addr)) {
+-		ret = PTR_ERR(f->ahb_addr);
++	if (IS_ERR(res)) {
++		ret = PTR_ERR(res);
+ 		goto err_put_ctrl;
+ 	}
+ 
+@@ -1073,6 +1098,9 @@ static int nxp_fspi_remove(struct platfo
+ 
+ 	mutex_destroy(&f->lock);
+ 
++	if (f->ahb_addr)
++		iounmap(f->ahb_addr);
++
+ 	return 0;
+ }
+