| Message ID | 20210311020954.842341-3-ilya.lipnitskiy@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net-next,v2,1/3] net: dsa: mt7530: setup core clock even in TRGMII mode | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | warning | Series does not have a cover letter |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 12 of 12 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 26 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 80a35caf920e..7ef5e7c23e05 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -435,15 +435,18 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface) mt7530_write(priv, MT7530_TRGMII_TD_ODT(i), TD_DM_DRVP(8) | TD_DM_DRVN(8)); - /* Setup core clock for MT7530 */ - /* Disable MT7530 core clock */ - core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); - - /* Disable PLL, since phy_device has not yet been created - * provided for phy_[read,write]_mmd_indirect is called, we - * provide our own core_write_mmd_indirect to complete this - * function. + /* Since phy_device has not yet been created and + * phy_[read,write]_mmd_indirect is not available, we provide our own + * core_write_mmd_indirect with core_{clear,write,set} wrappers to + * complete this function. */ + + /* Disable MT7530 core and TRGMII Tx clocks */ + core_clear(priv, CORE_TRGMII_GSW_CLK_CG, + REG_GSWCK_EN | REG_TRGMIICK_EN); + + /* Setup core clock for MT7530 */ + /* Disable PLL */ core_write(priv, CORE_GSWPLL_GRP1, 0); /* Set core clock into 500Mhz */
Disable both core and TRGMII Tx clocks prior to reconfiguring. Previously, only the core clock was disabled, but not TRGMII Tx clock. So disable both, then configure them, then re-enable both, for consistency. Reword the comment about core_write_mmd_indirect for clarity. Tested on Ubiquiti ER-X running the GMAC and MT7530 in TRGMII mode. Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> --- drivers/net/dsa/mt7530.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-)