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cddd459140
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>
192 lines
5.6 KiB
Diff
192 lines
5.6 KiB
Diff
From 73f7122003fca0d08142370e5b6c25783a7b43e9 Mon Sep 17 00:00:00 2001
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From: Peng Ma <peng.ma@nxp.com>
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Date: Wed, 15 May 2019 05:52:44 +0000
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Subject: [PATCH] ahci: qoriq: workaround for errata A-379364 on lx2160a
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There is a erratum on lx2160a which is: "SATA link is
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going down sometime during sata initialization"
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The workaround for it is to reset the lane. This patch
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implements this workaround.
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This erratum only exists on lx2160 Rev1, will be addressed
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on Rev2 and later.
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Signed-off-by: Peng Ma <peng.ma@nxp.com>
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---
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drivers/ata/ahci_qoriq.c | 144 +++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 144 insertions(+)
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--- a/drivers/ata/ahci_qoriq.c
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+++ b/drivers/ata/ahci_qoriq.c
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@@ -48,6 +48,27 @@
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#define ECC_DIS_ARMV8_CH2 0x80000000
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#define ECC_DIS_LS1088A 0x40000000
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+/* errata for lx2160 */
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+#define RCWSR29_BASE 0x1E00170
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+#define SERDES2_BASE 0x1EB0000
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+#define DEVICE_CONFIG_REG_BASE 0x1E00000
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+#define SERDES2_LNAX_RX_CR(x) (0x840 + (0x100 * (x)))
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+#define SERDES2_LNAX_RX_CBR(x) (0x8C0 + (0x100 * (x)))
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+#define SYS_VER_REG 0xA4
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+#define LN_RX_RST 0x80000010
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+#define LN_RX_RST_DONE 0x3
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+#define LN_RX_MASK 0xf
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+#define LX2160A_VER1 0x1
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+
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+#define SERDES2_LNAA 0
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+#define SERDES2_LNAB 1
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+#define SERDES2_LNAC 2
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+#define SERDES2_LNAD 3
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+#define SERDES2_LNAE 4
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+#define SERDES2_LNAF 5
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+#define SERDES2_LNAG 6
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+#define SERDES2_LNAH 7
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+
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enum ahci_qoriq_type {
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AHCI_LS1021A,
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AHCI_LS1028A,
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@@ -87,6 +108,126 @@ static const struct acpi_device_id ahci_
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};
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MODULE_DEVICE_TABLE(acpi, ahci_qoriq_acpi_match);
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+static void fsl_sata_errata_379364(bool select)
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+{
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+ int val = 0;
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+ void __iomem *rcw_base = NULL;
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+ void __iomem *serdes_base = NULL;
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+ void __iomem *dev_con_base = NULL;
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+
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+ if (select) {
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+ dev_con_base = ioremap(DEVICE_CONFIG_REG_BASE, PAGE_SIZE);
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+ if (!dev_con_base)
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+ return;
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+
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+ val = (readl(dev_con_base + SYS_VER_REG) & GENMASK(7, 4)) >> 4;
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+ if (val != LX2160A_VER1)
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+ goto dev_unmap;
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+
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+ /*
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+ * Add few msec delay.
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+ * Check for corresponding serdes lane RST_DONE .
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+ * apply lane reset.
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+ */
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+
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+ serdes_base = ioremap(SERDES2_BASE, PAGE_SIZE);
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+ if (!serdes_base)
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+ goto dev_unmap;
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+
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+ rcw_base = ioremap(RCWSR29_BASE, PAGE_SIZE);
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+ if (!rcw_base)
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+ goto serdes_unmap;
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+
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+ msleep(20);
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+
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+ val = (readl(rcw_base) & GENMASK(25, 21)) >> 21;
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+
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+ switch (val) {
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+ case 1:
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAC)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAC));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAD)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAD));
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+ break;
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+
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+ case 4:
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAG)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAG));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAH)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAH));
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+ break;
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+
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+ case 5:
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAE)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAE));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAF)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAF));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAG)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAG));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAH)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAH));
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+ break;
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+
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+ case 8:
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAC)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAC));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAD)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAD));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAE)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAE));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAF)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAF));
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+ break;
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+
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+ case 12:
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAG)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAG));
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+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAH)) &
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+ LN_RX_MASK) != LN_RX_RST_DONE)
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+ writel(LN_RX_RST, serdes_base +
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+ SERDES2_LNAX_RX_CR(SERDES2_LNAH));
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+ break;
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+
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+ default:
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+ break;
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+ }
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+ } else {
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+ return;
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+ }
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+
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+ iounmap(rcw_base);
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+serdes_unmap:
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+ iounmap(serdes_base);
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+dev_unmap:
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+ iounmap(dev_con_base);
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+}
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+
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static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,
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unsigned long deadline)
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{
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@@ -102,6 +243,7 @@ static int ahci_qoriq_hardreset(struct a
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bool online;
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int rc;
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bool ls1021a_workaround = (qoriq_priv->type == AHCI_LS1021A);
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+ bool lx2160a_workaround = (qoriq_priv->type == AHCI_LX2160A);
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DPRINTK("ENTER\n");
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@@ -128,6 +270,8 @@ static int ahci_qoriq_hardreset(struct a
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tf.command = ATA_BUSY;
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ata_tf_to_fis(&tf, 0, 0, d2h_fis);
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+ fsl_sata_errata_379364(lx2160a_workaround);
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+
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rc = sata_link_hardreset(link, timing, deadline, &online,
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ahci_check_ready);
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