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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-29 17:29:39 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-29 17:29:39 -0700 |
commit | e81507acdc19d91df4121f409871f3e4e055f6c2 (patch) | |
tree | 700e1df2e94eefa5ad3e9fc61c1e29e64a0d43a4 /drivers/clk/clk-renesas-pcie.c | |
parent | af3877265dd88d7e333f94fb37bc09554544adca (diff) | |
parent | a9863979fbc25838bbe7c5badf538cedfc802f60 (diff) | |
download | linux-e81507acdc19d91df4121f409871f3e4e055f6c2.tar.gz linux-e81507acdc19d91df4121f409871f3e4e055f6c2.tar.bz2 linux-e81507acdc19d91df4121f409871f3e4e055f6c2.zip |
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"Nothing looks out of the ordinary in this batch of clk driver updates.
There are a couple patches to the core clk framework, but they're all
basically cleanups or debugging aids. The driver updates and new
additions are dominated in the diffstat by Qualcomm and MediaTek
drivers. Qualcomm gained a handful of new drivers for various SoCs,
and MediaTek gained a bunch of drivers for MT8188. The MediaTek
drivers are being modernized as well, so there are updates all over
that vendor's clk drivers. There's also a couple other new clk drivers
in here, for example the Starfive JH7110 SoC support is added.
Outside of the two major SoC vendors though, we have the usual
collection of non-critical fixes and cleanups to various clk drivers.
It's good to see that we're getting more cleanups and modernization
patches. Maybe one day we'll be able to properly split clk providers
from clk consumers.
Core:
- Print an informational message before disabling unused clks
New Drivers:
- BCM63268 timer clock and reset controller
- Frequency Hopping (FHCTL) on MediaTek MT6795, MT8173, MT8192 and
MT8195 SoCs
- Mediatek MT8188 SoC clk drivers
- Clock driver for Sunplus SP7021 SoC
- Clk driver support for Loongson-2 SoCs
- Clock driver for Skyworks Si521xx I2C PCIe clock generators
- Initial Starfive JH7110 clk/reset support
- Global clock controller drivers for Qualcomm SM7150, IPQ9574,
MSM8917 and IPQ5332 SoCs
- GPU clock controller drivers for SM6115, SM6125, SM6375 and SA8775P
SoCs
Updates:
- Shrink size of clk_fractional_divider a little
- Convert various clk drivers to devm_of_clk_add_hw_provider()
- Convert platform clk drivers to remove_new()
- Converted most Mediatek clock drivers to struct platform_driver
- MediaTek clock drivers can be built as modules
- Reimplement Loongson-1 clk driver with DT support
- Migrate socfpga clk driver to of_clk_add_hw_provider()
- Support for i3c clks on Aspeed ast2600 SoCs
- Add clock generic devm_clk_hw_register_gate_parent_data
- Add audiomix block control for i.MX8MP
- Add support for determine_rate to i.MX composite-8m
- Let the LCDIF Pixel clock of i.MX8MM and i.MX8MN set parent rate
- Provide clock name in error message for clk-gpr-mux on get parent
failure
- Drop duplicate imx_clk_mux_flags macro
- Register the i.MX8MP Media Disp2 Pix clock as bus clock
- Add Media LDB root clock to i.MX8MP
- Make i.MX8MP nand_usdhc_bus clock as non-critical
- Fix the rate table for i.MX fracn-gppll
- Disable HW control for the fracn-gppll in order to be controlled by
register write
- Add support for interger PLL in fracn-gppll
- Add mcore_booted module parameter to i.MX93 provider
- Add NIC, A55 and ARM PLL clocks to i.MX93
- Fix i.MX8ULP XBAR_DIVBUS and AD_SLOW clock parents
- Use "divider closest" clock type for PLL4_PFD dividers on i.MX8ULP
to get more accurate clock rates
- Mark the MU0_Bi and TPM5 clocks on i.MX8ULP as critical
- Update some of the i.MX critical clocks flags to allow glitchless
on-the-fly rate change.
- Add I2C5 clock on Renesas R-Car V3H
- Exynos850: Add CMU_G3D clock controller for the Mali GPU
- Extract Exynos5433 (ARM64) clock controller power management code
to common driver parts
- Exynos850: make PMU_ALIVE_PCLK clock critical
- Add Audio, thermal, camera (CSI-2), Image Signal Processor/Channel
Selector (ISPCS), and video capture (VIN) clocks on Renesas R-Car
V4H
- Add video capture (VIN) clocks on Renesas R-Car V3H
- Add Cortex-A53 System CPU (Z2) clocks on Renesas R-Car V3M and V3H
- Support for Stromer Plus PLL on Qualcomm IPQ5332
- Add a missing reset to Qualcomm QCM2290
- Migrate Qualcomm IPQ4019 to clk_parent_data
- Make USB GDSCs enter retention state when disabled on Qualcomm
SM6375, MSM8996 and MSM8998 SoCs
- Set floor rounding clk_ops for Qualcomm QCM2290 SDCC2 clk
- Add two EMAC GDSCs on Qualcomm SC8280XP
- Use shared rcg clk ops in Qualcomm SM6115 GCC
- Park Qualcomm SM8350 PCIe PIPE clks when disabled
- Add GDSCs to Qualcomm SC7280 LPASS audio clock controller
- Add missing XO clocks to Qualcomm MSM8226 and MSM8974
- Convert some Qualcomm clk DT bindings to YAML
- Reparenting fix for the clock supplying camera modules on Rockchip
rk3399
- Mark more critical (bus-)clocks on Rockchip rk3588"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (290 commits)
clk: qcom: gcc-sc8280xp: Add EMAC GDSCs
clk: starfive: Delete the redundant dev_set_drvdata() in JH7110 clock drivers
clk: rockchip: rk3588: make gate linked clocks critical
clk: qcom: dispcc-qcm2290: Remove inexistent DSI1PHY clk
clk: qcom: add the GPUCC driver for sa8775p
dt-bindings: clock: qcom: describe the GPUCC clock for SA8775P
clk: qcom: gcc-sm8350: fix PCIe PIPE clocks handling
clk: qcom: lpassaudiocc-sc7280: Add required gdsc power domain clks in lpass_cc_sc7280_desc
clk: qcom: lpasscc-sc7280: Skip qdsp6ss clock registration
dt-bindings: clock: qcom,sc7280-lpasscc: Add qcom,adsp-pil-mode property
clk: starfive: Avoid casting iomem pointers
clk: microchip: fix potential UAF in auxdev release callback
clk: qcom: rpm: Use managed `of_clk_add_hw_provider()`
clk: mediatek: fhctl: Mark local variables static
clk: sifive: make SiFive clk drivers depend on ARCH_ symbols
clk: uniphier: Use managed `of_clk_add_hw_provider()`
clk: si5351: Use managed `of_clk_add_hw_provider()`
clk: si570: Use managed `of_clk_add_hw_provider()`
clk: si514: Use managed `of_clk_add_hw_provider()`
clk: lmk04832: Use managed `of_clk_add_hw_provider()`
...
Diffstat (limited to 'drivers/clk/clk-renesas-pcie.c')
-rw-r--r-- | drivers/clk/clk-renesas-pcie.c | 70 |
1 files changed, 56 insertions, 14 deletions
diff --git a/drivers/clk/clk-renesas-pcie.c b/drivers/clk/clk-renesas-pcie.c index ff3a52d48479..10d31c222a1c 100644 --- a/drivers/clk/clk-renesas-pcie.c +++ b/drivers/clk/clk-renesas-pcie.c @@ -6,6 +6,7 @@ * - 9FGV/9DBV/9DMV/9FGL/9DML/9QXL/9SQ * Currently supported: * - 9FGV0241 + * - 9FGV0441 * * Copyright (C) 2022 Marek Vasut <marex@denx.de> */ @@ -18,7 +19,6 @@ #include <linux/regmap.h> #define RS9_REG_OE 0x0 -#define RS9_REG_OE_DIF_OE(n) BIT((n) + 1) #define RS9_REG_SS 0x1 #define RS9_REG_SS_AMP_0V6 0x0 #define RS9_REG_SS_AMP_0V7 0x1 @@ -31,9 +31,6 @@ #define RS9_REG_SS_SSC_MASK (3 << 3) #define RS9_REG_SS_SSC_LOCK BIT(5) #define RS9_REG_SR 0x2 -#define RS9_REG_SR_2V0_DIF(n) 0 -#define RS9_REG_SR_3V0_DIF(n) BIT((n) + 1) -#define RS9_REG_SR_DIF_MASK(n) BIT((n) + 1) #define RS9_REG_REF 0x3 #define RS9_REG_REF_OE BIT(4) #define RS9_REG_REF_OD BIT(5) @@ -45,22 +42,31 @@ #define RS9_REG_DID 0x6 #define RS9_REG_BCP 0x7 +#define RS9_REG_VID_IDT 0x01 + +#define RS9_REG_DID_TYPE_FGV (0x0 << RS9_REG_DID_TYPE_SHIFT) +#define RS9_REG_DID_TYPE_DBV (0x1 << RS9_REG_DID_TYPE_SHIFT) +#define RS9_REG_DID_TYPE_DMV (0x2 << RS9_REG_DID_TYPE_SHIFT) +#define RS9_REG_DID_TYPE_SHIFT 0x6 + /* Supported Renesas 9-series models. */ enum rs9_model { RENESAS_9FGV0241, + RENESAS_9FGV0441, }; /* Structure to describe features of a particular 9-series model */ struct rs9_chip_info { const enum rs9_model model; unsigned int num_clks; + u8 did; }; struct rs9_driver_data { struct i2c_client *client; struct regmap *regmap; const struct rs9_chip_info *chip_info; - struct clk_hw *clk_dif[2]; + struct clk_hw *clk_dif[4]; u8 pll_amplitude; u8 pll_ssc; u8 clk_dif_sr; @@ -152,17 +158,29 @@ static const struct regmap_config rs9_regmap_config = { .reg_read = rs9_regmap_i2c_read, }; +static u8 rs9_calc_dif(const struct rs9_driver_data *rs9, int idx) +{ + enum rs9_model model = rs9->chip_info->model; + + if (model == RENESAS_9FGV0241) + return BIT(idx) + 1; + else if (model == RENESAS_9FGV0441) + return BIT(idx); + + return 0; +} + static int rs9_get_output_config(struct rs9_driver_data *rs9, int idx) { struct i2c_client *client = rs9->client; + u8 dif = rs9_calc_dif(rs9, idx); unsigned char name[5] = "DIF0"; struct device_node *np; int ret; u32 sr; /* Set defaults */ - rs9->clk_dif_sr &= ~RS9_REG_SR_DIF_MASK(idx); - rs9->clk_dif_sr |= RS9_REG_SR_3V0_DIF(idx); + rs9->clk_dif_sr |= dif; snprintf(name, 5, "DIF%d", idx); np = of_get_child_by_name(client->dev.of_node, name); @@ -174,11 +192,9 @@ static int rs9_get_output_config(struct rs9_driver_data *rs9, int idx) of_node_put(np); if (!ret) { if (sr == 2000000) { /* 2V/ns */ - rs9->clk_dif_sr &= ~RS9_REG_SR_DIF_MASK(idx); - rs9->clk_dif_sr |= RS9_REG_SR_2V0_DIF(idx); + rs9->clk_dif_sr &= ~dif; } else if (sr == 3000000) { /* 3V/ns (default) */ - rs9->clk_dif_sr &= ~RS9_REG_SR_DIF_MASK(idx); - rs9->clk_dif_sr |= RS9_REG_SR_3V0_DIF(idx); + rs9->clk_dif_sr |= dif; } else ret = dev_err_probe(&client->dev, -EINVAL, "Invalid renesas,slew-rate value\n"); @@ -249,11 +265,13 @@ static void rs9_update_config(struct rs9_driver_data *rs9) } for (i = 0; i < rs9->chip_info->num_clks; i++) { - if (rs9->clk_dif_sr & RS9_REG_SR_3V0_DIF(i)) + u8 dif = rs9_calc_dif(rs9, i); + + if (rs9->clk_dif_sr & dif) continue; - regmap_update_bits(rs9->regmap, RS9_REG_SR, RS9_REG_SR_3V0_DIF(i), - rs9->clk_dif_sr & RS9_REG_SR_3V0_DIF(i)); + regmap_update_bits(rs9->regmap, RS9_REG_SR, dif, + rs9->clk_dif_sr & dif); } } @@ -270,6 +288,7 @@ static int rs9_probe(struct i2c_client *client) { unsigned char name[5] = "DIF0"; struct rs9_driver_data *rs9; + unsigned int vid, did; struct clk_hw *hw; int i, ret; @@ -306,6 +325,20 @@ static int rs9_probe(struct i2c_client *client) if (ret < 0) return ret; + ret = regmap_read(rs9->regmap, RS9_REG_VID, &vid); + if (ret < 0) + return ret; + + ret = regmap_read(rs9->regmap, RS9_REG_DID, &did); + if (ret < 0) + return ret; + + if (vid != RS9_REG_VID_IDT || did != rs9->chip_info->did) + return dev_err_probe(&client->dev, -ENODEV, + "Incorrect VID/DID: %#02x, %#02x. Expected %#02x, %#02x\n", + vid, did, RS9_REG_VID_IDT, + rs9->chip_info->did); + /* Register clock */ for (i = 0; i < rs9->chip_info->num_clks; i++) { snprintf(name, 5, "DIF%d", i); @@ -349,16 +382,25 @@ static int __maybe_unused rs9_resume(struct device *dev) static const struct rs9_chip_info renesas_9fgv0241_info = { .model = RENESAS_9FGV0241, .num_clks = 2, + .did = RS9_REG_DID_TYPE_FGV | 0x02, +}; + +static const struct rs9_chip_info renesas_9fgv0441_info = { + .model = RENESAS_9FGV0441, + .num_clks = 4, + .did = RS9_REG_DID_TYPE_FGV | 0x04, }; static const struct i2c_device_id rs9_id[] = { { "9fgv0241", .driver_data = RENESAS_9FGV0241 }, + { "9fgv0441", .driver_data = RENESAS_9FGV0441 }, { } }; MODULE_DEVICE_TABLE(i2c, rs9_id); static const struct of_device_id clk_rs9_of_match[] = { { .compatible = "renesas,9fgv0241", .data = &renesas_9fgv0241_info }, + { .compatible = "renesas,9fgv0441", .data = &renesas_9fgv0441_info }, { } }; MODULE_DEVICE_TABLE(of, clk_rs9_of_match); |