8 files changed, 38 insertions, 9 deletions

diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml
index 876c0623f322..732339275848 100644
--- a/Documentation/devicetree/bindings/spi/spi-controller.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml
@@ -31,7 +31,7 @@ properties:
       If that property is used, the number of chip selects will be
       increased automatically with max(cs-gpios, hardware chip selects).
 
-      So if, for example, the controller has 2 CS lines, and the
+      So if, for example, the controller has 4 CS lines, and the
       cs-gpios looks like this
         cs-gpios = <&gpio1 0 0>, <0>, <&gpio1 1 0>, <&gpio1 2 0>;
 
@@ -73,7 +73,6 @@ patternProperties:
           Compatible of the SPI device.
 
       reg:
-        maxItems: 1
         minimum: 0
         maximum: 256
         description:
diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index 902bdbfedea8..0dbfd2496ab8 100644
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -343,7 +343,7 @@ static int bcm_qspi_bspi_set_flex_mode(struct bcm_qspi *qspi,
 {
         int bpc = 0, bpp = 0;
         u8 command = op->cmd.opcode;
-        int width  = op->cmd.buswidth ? op->cmd.buswidth : SPI_NBITS_SINGLE;
+        int width = op->data.buswidth ? op->data.buswidth : SPI_NBITS_SINGLE;
         int addrlen = op->addr.nbytes;
         int flex_mode = 1;
 
@@ -981,7 +981,7 @@ static int bcm_qspi_exec_mem_op(struct spi_mem *mem,
         if (mspi_read)
                 return bcm_qspi_mspi_exec_mem_op(spi, op);
 
-        ret = bcm_qspi_bspi_set_mode(qspi, op, -1);
+        ret = bcm_qspi_bspi_set_mode(qspi, op, 0);
 
         if (!ret)
                 ret = bcm_qspi_bspi_exec_mem_op(spi, op);
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index c96797844688..4b89e0a04ffd 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -834,7 +834,8 @@ static int bcm2835_spi_transfer_one(struct spi_controller *ctlr,
         bcm2835_wr(bs, BCM2835_SPI_CLK, cdiv);
 
         /* handle all the 3-wire mode */
-        if ((spi->mode & SPI_3WIRE) && (tfr->rx_buf))
+        if (spi->mode & SPI_3WIRE && tfr->rx_buf &&
+            tfr->rx_buf != ctlr->dummy_rx)
                 cs |= BCM2835_SPI_CS_REN;
         else
                 cs &= ~BCM2835_SPI_CS_REN;
diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
index c1e2401cace0..4e3a4c317636 100644
--- a/drivers/spi/spi-dw-pci.c
+++ b/drivers/spi/spi-dw-pci.c
@@ -19,6 +19,7 @@ struct spi_pci_desc {
         int     (*setup)(struct dw_spi *);
         u16     num_cs;
         u16     bus_num;
+        u32     max_freq;
 };
 
 static struct spi_pci_desc spi_pci_mid_desc_1 = {
@@ -33,6 +34,12 @@ static struct spi_pci_desc spi_pci_mid_desc_2 = {
         .bus_num = 1,
 };
 
+static struct spi_pci_desc spi_pci_ehl_desc = {
+        .num_cs = 1,
+        .bus_num = -1,
+        .max_freq = 100000000,
+};
+
 static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
         struct dw_spi *dws;
@@ -65,6 +72,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (desc) {
                 dws->num_cs = desc->num_cs;
                 dws->bus_num = desc->bus_num;
+                dws->max_freq = desc->max_freq;
 
                 if (desc->setup) {
                         ret = desc->setup(dws);
@@ -123,6 +131,11 @@ static const struct pci_device_id pci_ids[] = {
         { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
         /* Intel MID platform SPI controller 2 */
         { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
+        /* Intel Elkhart Lake PSE SPI controllers */
+        { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&spi_pci_ehl_desc},
+        { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&spi_pci_ehl_desc},
+        { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&spi_pci_ehl_desc},
+        { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&spi_pci_ehl_desc},
         {},
 };
 
diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c
index 443d4c1196c2..c02e24c01136 100644
--- a/drivers/spi/spi-fsl-qspi.c
+++ b/drivers/spi/spi-fsl-qspi.c
@@ -206,7 +206,7 @@ static const struct fsl_qspi_devtype_data imx6sx_data = {
 };
 
 static const struct fsl_qspi_devtype_data imx7d_data = {
-        .rxfifo = SZ_512,
+        .rxfifo = SZ_128,
         .txfifo = SZ_512,
         .ahb_buf_size = SZ_1K,
         .quirks = QUADSPI_QUIRK_TKT253890 | QUADSPI_QUIRK_4X_INT_CLK,
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c
index eca9d52ecf65..9eb82150666e 100644
--- a/drivers/spi/spi-gpio.c
+++ b/drivers/spi/spi-gpio.c
@@ -410,6 +410,12 @@ static int spi_gpio_probe(struct platform_device *pdev)
 
         bb = &spi_gpio->bitbang;
         bb->master = master;
+        /*
+         * There is some additional business, apart from driving the CS GPIO
+         * line, that we need to do on selection. This makes the local
+         * callback for chipselect always get called.
+         */
+        master->flags |= SPI_MASTER_GPIO_SS;
         bb->chipselect = spi_gpio_chipselect;
         bb->set_line_direction = spi_gpio_set_direction;
 
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index fc7ab4b26880..bb6a14d1ab0f 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1457,6 +1457,14 @@ static const struct pci_device_id pxa2xx_spi_pci_compound_match[] = {
         { PCI_VDEVICE(INTEL, 0x02aa), LPSS_CNL_SSP },
         { PCI_VDEVICE(INTEL, 0x02ab), LPSS_CNL_SSP },
         { PCI_VDEVICE(INTEL, 0x02fb), LPSS_CNL_SSP },
+        /* TGL-LP */
+        { PCI_VDEVICE(INTEL, 0xa0aa), LPSS_CNL_SSP },
+        { PCI_VDEVICE(INTEL, 0xa0ab), LPSS_CNL_SSP },
+        { PCI_VDEVICE(INTEL, 0xa0de), LPSS_CNL_SSP },
+        { PCI_VDEVICE(INTEL, 0xa0df), LPSS_CNL_SSP },
+        { PCI_VDEVICE(INTEL, 0xa0fb), LPSS_CNL_SSP },
+        { PCI_VDEVICE(INTEL, 0xa0fd), LPSS_CNL_SSP },
+        { PCI_VDEVICE(INTEL, 0xa0fe), LPSS_CNL_SSP },
         { },
 };
 
@@ -1831,14 +1839,16 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
         status = devm_spi_register_controller(&pdev->dev, controller);
         if (status != 0) {
                 dev_err(&pdev->dev, "problem registering spi controller\n");
-                goto out_error_clock_enabled;
+                goto out_error_pm_runtime_enabled;
         }
 
         return status;
 
-out_error_clock_enabled:
+out_error_pm_runtime_enabled:
         pm_runtime_put_noidle(&pdev->dev);
         pm_runtime_disable(&pdev->dev);
+
+out_error_clock_enabled:
         clk_disable_unprepare(ssp->clk);
 
 out_error_dma_irq_alloc:
diff --git a/drivers/spi/spi-zynq-qspi.c b/drivers/spi/spi-zynq-qspi.c
index 3155e2cabb1e..4a5326ccf65a 100644
--- a/drivers/spi/spi-zynq-qspi.c
+++ b/drivers/spi/spi-zynq-qspi.c
@@ -694,7 +694,7 @@ static int zynq_qspi_probe(struct platform_device *pdev)
         ctlr->setup = zynq_qspi_setup_op;
         ctlr->max_speed_hz = clk_get_rate(xqspi->refclk) / 2;
         ctlr->dev.of_node = np;
-        ret = spi_register_controller(ctlr);
+        ret = devm_spi_register_controller(&pdev->dev, ctlr);
         if (ret) {
                 dev_err(&pdev->dev, "spi_register_master failed\n");
                 goto clk_dis_all;