diff options
Diffstat (limited to 'target/linux/ath79/patches-5.10/0062-MIPS-pci-ar724x-add-QCA9550-reset-sequence.patch')
| -rw-r--r-- | target/linux/ath79/patches-5.10/0062-MIPS-pci-ar724x-add-QCA9550-reset-sequence.patch | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/target/linux/ath79/patches-5.10/0062-MIPS-pci-ar724x-add-QCA9550-reset-sequence.patch b/target/linux/ath79/patches-5.10/0062-MIPS-pci-ar724x-add-QCA9550-reset-sequence.patch deleted file mode 100644 index f596ddb733..0000000000 --- a/target/linux/ath79/patches-5.10/0062-MIPS-pci-ar724x-add-QCA9550-reset-sequence.patch +++ /dev/null @@ -1,130 +0,0 @@ -From: David Bauer <mail@david-bauer.net> -Date: Sat, 11 Apr 2020 14:03:12 +0200 -Subject: MIPS: pci-ar724x: add QCA9550 reset sequence - -The QCA9550 family of SoCs have a slightly different reset -sequence compared to older chips. - -Normally the bootloader performs this sequence, however -some bootloader implementation expect the operating system -to clear the reset. - -Also get the resets from OF to support handling of the second -PCIe root-complex on the QCA9558. - -Signed-off-by: David Bauer <mail@david-bauer.net> - ---- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h -+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h -@@ -391,6 +391,7 @@ - #define QCA955X_PLL_CPU_CONFIG_REG 0x00 - #define QCA955X_PLL_DDR_CONFIG_REG 0x04 - #define QCA955X_PLL_CLK_CTRL_REG 0x08 -+#define QCA955X_PLL_PCIE_CONFIG_REG 0x0c - #define QCA955X_PLL_ETH_XMII_CONTROL_REG 0x28 - #define QCA955X_PLL_ETH_SGMII_CONTROL_REG 0x48 - #define QCA955X_PLL_ETH_SGMII_SERDES_REG 0x4c -@@ -476,6 +477,9 @@ - #define QCA956X_PLL_CLK_CTRL_CPU_DDRCLK_FROM_CPUPLL BIT(21) - #define QCA956X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL BIT(24) - -+#define QCA955X_PLL_PCIE_CONFIG_PLL_PWD BIT(30) -+#define QCA955X_PLL_PCIE_CONFIG_PLL_BYPASS BIT(16) -+ - #define QCA956X_PLL_SWITCH_CLOCK_SPARE_I2C_CLK_SELB BIT(5) - #define QCA956X_PLL_SWITCH_CLOCK_SPARE_MDIO_CLK_SEL0_1 BIT(6) - #define QCA956X_PLL_SWITCH_CLOCK_SPARE_UART1_CLK_SEL BIT(7) ---- a/arch/mips/pci/pci-ar724x.c -+++ b/arch/mips/pci/pci-ar724x.c -@@ -8,6 +8,7 @@ - - #include <linux/irq.h> - #include <linux/pci.h> -+#include <linux/reset.h> - #include <linux/init.h> - #include <linux/delay.h> - #include <linux/platform_device.h> -@@ -55,6 +56,9 @@ struct ar724x_pci_controller { - struct irq_domain *domain; - struct resource io_res; - struct resource mem_res; -+ -+ struct reset_control *hc_reset; -+ struct reset_control *phy_reset; - }; - - static struct irq_chip ar724x_pci_irq_chip; -@@ -340,18 +344,30 @@ static void ar724x_pci_hw_init(struct ar - int wait = 0; - - /* deassert PCIe host controller and PCIe PHY reset */ -- ath79_device_reset_clear(AR724X_RESET_PCIE); -- ath79_device_reset_clear(AR724X_RESET_PCIE_PHY); -+ reset_control_deassert(apc->hc_reset); -+ reset_control_deassert(apc->phy_reset); - -- /* remove the reset of the PCIE PLL */ -- ppl = ath79_pll_rr(AR724X_PLL_REG_PCIE_CONFIG); -- ppl &= ~AR724X_PLL_REG_PCIE_CONFIG_PPL_RESET; -- ath79_pll_wr(AR724X_PLL_REG_PCIE_CONFIG, ppl); -- -- /* deassert bypass for the PCIE PLL */ -- ppl = ath79_pll_rr(AR724X_PLL_REG_PCIE_CONFIG); -- ppl &= ~AR724X_PLL_REG_PCIE_CONFIG_PPL_BYPASS; -- ath79_pll_wr(AR724X_PLL_REG_PCIE_CONFIG, ppl); -+ if (of_device_is_compatible(apc->np, "qcom,qca9550-pci")) { -+ /* remove the reset of the PCIE PLL */ -+ ppl = ath79_pll_rr(QCA955X_PLL_PCIE_CONFIG_REG); -+ ppl &= ~QCA955X_PLL_PCIE_CONFIG_PLL_PWD; -+ ath79_pll_wr(QCA955X_PLL_PCIE_CONFIG_REG, ppl); -+ -+ /* deassert bypass for the PCIE PLL */ -+ ppl = ath79_pll_rr(QCA955X_PLL_PCIE_CONFIG_REG); -+ ppl &= ~QCA955X_PLL_PCIE_CONFIG_PLL_BYPASS; -+ ath79_pll_wr(QCA955X_PLL_PCIE_CONFIG_REG, ppl); -+ } else { -+ /* remove the reset of the PCIE PLL */ -+ ppl = ath79_pll_rr(AR724X_PLL_REG_PCIE_CONFIG); -+ ppl &= ~AR724X_PLL_REG_PCIE_CONFIG_PPL_RESET; -+ ath79_pll_wr(AR724X_PLL_REG_PCIE_CONFIG, ppl); -+ -+ /* deassert bypass for the PCIE PLL */ -+ ppl = ath79_pll_rr(AR724X_PLL_REG_PCIE_CONFIG); -+ ppl &= ~AR724X_PLL_REG_PCIE_CONFIG_PPL_BYPASS; -+ ath79_pll_wr(AR724X_PLL_REG_PCIE_CONFIG, ppl); -+ } - - /* set PCIE Application Control to ready */ - app = __raw_readl(apc->ctrl_base + AR724X_PCI_REG_APP); -@@ -396,6 +412,14 @@ static int ar724x_pci_probe(struct platf - if (apc->irq < 0) - return -EINVAL; - -+ apc->hc_reset = devm_reset_control_get_exclusive(&pdev->dev, "hc"); -+ if (IS_ERR(apc->hc_reset)) -+ return PTR_ERR(apc->hc_reset); -+ -+ apc->phy_reset = devm_reset_control_get_exclusive(&pdev->dev, "phy"); -+ if (IS_ERR(apc->phy_reset)) -+ return PTR_ERR(apc->phy_reset); -+ - apc->np = pdev->dev.of_node; - apc->pci_controller.pci_ops = &ar724x_pci_ops; - apc->pci_controller.io_resource = &apc->io_res; -@@ -406,7 +430,7 @@ static int ar724x_pci_probe(struct platf - * Do the full PCIE Root Complex Initialization Sequence if the PCIe - * host controller is in reset. - */ -- if (ath79_reset_rr(AR724X_RESET_REG_RESET_MODULE) & AR724X_RESET_PCIE) -+ if (reset_control_status(apc->hc_reset)) - ar724x_pci_hw_init(apc); - - apc->link_up = ar724x_pci_check_link(apc); -@@ -424,6 +448,7 @@ static int ar724x_pci_probe(struct platf - - static const struct of_device_id ar724x_pci_ids[] = { - { .compatible = "qcom,ar7240-pci" }, -+ { .compatible = "qcom,qca9550-pci" }, - {}, - }; - |