History

mtd: spi-nor: intel-spi: add support for Intel Cannon Lake SPI flash

Now that SPI flash controllers without a software sequencer are supported, it's trivial to add support for CNL and its PCI ID. Values from https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/300-series-chipset-pch-datasheet-vol-2.pdf

Jethro Beekman committed 7 years ago

Commit 4b97ba71 parent 39129703 files · +17 −0Browse files

Unified · Split

3 files
  1. drivers/mtd/spi-nor/intel-spi-pci.c +5 −0
  2. drivers/mtd/spi-nor/intel-spi.c +11 −0
  3. include/linux/platform_data/intel-spi.h +1 −0
drivers/mtd/spi-nor/intel-spi-pci.c+5−0
@@ -20,6 +20,10 @@ static const struct intel_spi_boardinfo bxt_info = { · 19 unmodified lines
2020 .type = INTEL_SPI_BXT,
2121 };
2222
23+static const struct intel_spi_boardinfo cnl_info = {
24+ .type = INTEL_SPI_CNL,
25+};
26+
2327 static int intel_spi_pci_probe(struct pci_dev *pdev,
2428 const struct pci_device_id *id)
2529 {
@@ -68,6 +72,7 @@ static const struct pci_device_id intel_spi_pci_ids[] = { · 42 unmodified lines
6872 { PCI_VDEVICE(INTEL, 0xa0a4), (unsigned long)&bxt_info },
6973 { PCI_VDEVICE(INTEL, 0xa1a4), (unsigned long)&bxt_info },
7074 { PCI_VDEVICE(INTEL, 0xa224), (unsigned long)&bxt_info },
75+ { PCI_VDEVICE(INTEL, 0xa324), (unsigned long)&cnl_info },
7176 { },
7277 };
7378 MODULE_DEVICE_TABLE(pci, intel_spi_pci_ids);
drivers/mtd/spi-nor/intel-spi.c+11−0
@@ -108,6 +108,10 @@ · 107 unmodified lines
108108 #define BXT_FREG_NUM 12
109109 #define BXT_PR_NUM 6
110110
111+#define CNL_PR 0x84
112+#define CNL_FREG_NUM 6
113+#define CNL_PR_NUM 5
114+
111115 #define LVSCC 0xc4
112116 #define UVSCC 0xc8
113117 #define ERASE_OPCODE_SHIFT 8
@@ -344,6 +348,13 @@ static int intel_spi_init(struct intel_spi *ispi) · 230 unmodified lines
344348 ispi->erase_64k = true;
345349 break;
346350
351+ case INTEL_SPI_CNL:
352+ ispi->sregs = NULL;
353+ ispi->pregs = ispi->base + CNL_PR;
354+ ispi->nregions = CNL_FREG_NUM;
355+ ispi->pr_num = CNL_PR_NUM;
356+ break;
357+
347358 default:
348359 return -EINVAL;
349360 }
include/linux/platform_data/intel-spi.h+1−0
@@ -13,6 +13,7 @@ enum intel_spi_type { · 12 unmodified lines
1313 INTEL_SPI_BYT = 1,
1414 INTEL_SPI_LPT,
1515 INTEL_SPI_BXT,
16+ INTEL_SPI_CNL,
1617 };
1718
1819 /**

Keyboard shortcuts

General

Show keyboard shortcuts
?
Focus the current search
/

Issues and pull requests

Open filters
f

Issues, pull requests and Inbox

Select next item
j↓
Select previous item
k↑
Open selected item
Enter
Dismiss filters or clear selection
Esc

Repository code

Go to file
t